25.3. MySQL Connector/J

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Esta sección proporciona algún conocimiento general de JDBC.

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

// Notice, do not import com.mysql.jdbc.*
// or you will have problems!

public class LoadDriver {
    public static void main(String[] args) {
        try {
            // The newInstance() call is a work around for some
            // broken Java implementations

            Class.forName("com.mysql.jdbc.Driver").newInstance();
        } catch (Exception ex) {
            // handle the error
        }
}

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

    ... try {
            Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/test?user=monty&password=greatsqldb");

            // Do something with the Connection

           ....
        } catch (SQLException ex) {
            // handle any errors
            System.out.println("SQLException: " + ex.getMessage());
            System.out.println("SQLState: " + ex.getSQLState());
            System.out.println("VendorError: " + ex.getErrorCode());
        }

// assume conn is an already created JDBC connection
Statement stmt = null;
ResultSet rs = null;

try {
    stmt = conn.createStatement();
    rs = stmt.executeQuery("SELECT foo FROM bar");

    // or alternatively, if you don't know ahead of time that
    // the query will be a SELECT...

    if (stmt.execute("SELECT foo FROM bar")) {
        rs = stmt.getResultSet();
    }

    // Now do something with the ResultSet ....
} finally {
    // it is a good idea to release
    // resources in a finally{} block
    // in reverse-order of their creation
    // if they are no-longer needed

    if (rs != null) {
        try {
            rs.close();
        } catch (SQLException sqlEx) { // ignore }

        rs = null;
    }

    if (stmt != null) {
        try {
            stmt.close();
        } catch (SQLException sqlEx) { // ignore }

        stmt = null;
    }
}

CREATE PROCEDURE demoSp(IN inputParam VARCHAR(255), INOUT inOutParam INT)
BEGIN
    DECLARE z INT;
    SET z = inOutParam + 1;
    SET inOutParam = z;

    SELECT inputParam;

    SELECT CONCAT('zyxw', inputParam);
END

   Statement stmt = null;
   ResultSet rs = null;

   try {

    //
    // Create a Statement instance that we can use for
    // 'normal' result sets assuming you have a
    // Connection 'conn' to a MySQL database already
    // available

    stmt = conn.createStatement(java.sql.ResultSet.TYPE_FORWARD_ONLY,
                                java.sql.ResultSet.CONCUR_UPDATABLE);

    //
    // Issue the DDL queries for the table for this example
    //

    stmt.executeUpdate("DROP TABLE IF EXISTS autoIncTutorial");
    stmt.executeUpdate(
            "CREATE TABLE autoIncTutorial ("
            + "priKey INT NOT NULL AUTO_INCREMENT, "
            + "dataField VARCHAR(64), PRIMARY KEY (priKey))");

    //
    // Insert one row that will generate an AUTO INCREMENT
    // key in the 'priKey' field
    //

    stmt.executeUpdate(
            "INSERT INTO autoIncTutorial (dataField) "
            + "values ('Can I Get the Auto Increment Field?')",
            Statement.RETURN_GENERATED_KEYS);

    //
    // Example of using Statement.getGeneratedKeys()
    // to retrieve the value of an auto-increment
    // value
    //

    int autoIncKeyFromApi = -1;

    rs = stmt.getGeneratedKeys();

    if (rs.next()) {
        autoIncKeyFromApi = rs.getInt(1);
    } else {

        // throw an exception from here
    }

    rs.close();

    rs = null;

    System.out.println("Key returned from getGeneratedKeys():"
        + autoIncKeyFromApi);
} finally {

    if (rs != null) {
        try {
            rs.close();
        } catch (SQLException ex) {
            // ignore
        }
    }

    if (stmt != null) {
        try {
            stmt.close();
        } catch (SQLException ex) {
            // ignore
        }
    }
}

   Statement stmt = null;
   ResultSet rs = null;

   try {

    //
    // Create a Statement instance that we can use for
    // 'normal' result sets.

    stmt = conn.createStatement();

    //
    // Issue the DDL queries for the table for this example
    //

    stmt.executeUpdate("DROP TABLE IF EXISTS autoIncTutorial");
    stmt.executeUpdate(
            "CREATE TABLE autoIncTutorial ("
            + "priKey INT NOT NULL AUTO_INCREMENT, "
            + "dataField VARCHAR(64), PRIMARY KEY (priKey))");

    //
    // Insert one row that will generate an AUTO INCREMENT
    // key in the 'priKey' field
    //

    stmt.executeUpdate(
            "INSERT INTO autoIncTutorial (dataField) "
            + "values ('Can I Get the Auto Increment Field?')");

    //
    // Use the MySQL LAST_INSERT_ID()
    // function to do the same thing as getGeneratedKeys()
    //

    int autoIncKeyFromFunc = -1;
    rs = stmt.executeQuery("SELECT LAST_INSERT_ID()");

    if (rs.next()) {
        autoIncKeyFromFunc = rs.getInt(1);
    } else {
        // throw an exception from here
    }

    rs.close();

    System.out.println("Key returned from " + "'SELECT LAST_INSERT_ID()': "
        + autoIncKeyFromFunc);

} finally {

    if (rs != null) {
        try {
            rs.close();
        } catch (SQLException ex) {
            // ignore
        }
    }

    if (stmt != null) {
        try {
            stmt.close();
        } catch (SQLException ex) {
            // ignore
        }
    }
}
   

   Statement stmt = null;
   ResultSet rs = null;

   try {

    //
    // Create a Statement instance that we can use for
    // 'normal' result sets as well as an 'updatable'
    // one, assuming you have a Connection 'conn' to
    // a MySQL database already available
    //

    stmt = conn.createStatement(java.sql.ResultSet.TYPE_FORWARD_ONLY,
                                java.sql.ResultSet.CONCUR_UPDATABLE);

    //
    // Issue the DDL queries for the table for this example
    //

    stmt.executeUpdate("DROP TABLE IF EXISTS autoIncTutorial");
    stmt.executeUpdate(
            "CREATE TABLE autoIncTutorial ("
            + "priKey INT NOT NULL AUTO_INCREMENT, "
            + "dataField VARCHAR(64), PRIMARY KEY (priKey))");

    //
    // Example of retrieving an AUTO INCREMENT key
    // from an updatable result set
    //

    rs = stmt.executeQuery("SELECT priKey, dataField "
       + "FROM autoIncTutorial");

    rs.moveToInsertRow();

    rs.updateString("dataField", "AUTO INCREMENT here?");
    rs.insertRow();

    //
    // the driver adds rows at the end
    //

    rs.last();

    //
    // We should now be on the row we just inserted
    //

    int autoIncKeyFromRS = rs.getInt("priKey");

    rs.close();

    rs = null;

    System.out.println("Key returned for inserted row: "
        + autoIncKeyFromRS);

} finally {

    if (rs != null) {
        try {
            rs.close();
        } catch (SQLException ex) {
            // ignore
        }
    }

    if (stmt != null) {
        try {
            stmt.close();
        } catch (SQLException ex) {
            // ignore
        }
    }
}


   

Use las siguientes instrucciones para instalar el Connector/J

$ setenv CLASSPATH /path/to/mysql-connector-java-[version]-bin.jar:$CLASSPATH

Esta sección describe cómo usar Connector/J en varios contextos.

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

import javax.naming.InitialContext;
import javax.sql.DataSource;


public class MyServletJspOrEjb {

    public void doSomething() throws Exception {
        /*
         * Create a JNDI Initial context to be able to
         *  lookup  the DataSource
         *
         * In production-level code, this should be cached as
         * an instance or static variable, as it can
         * be quite expensive to create a JNDI context.
         *
         * Note: This code only works when you are using servlets
         * or EJBs in a J2EE application server. If you are
         * using connection pooling in standalone Java code, you
         * will have to create/configure datasources using whatever
         * mechanisms your particular connection pooling library
         * provides.
         */

        InitialContext ctx = new InitialContext();

         /*
          * Lookup the DataSource, which will be backed by a pool
          * that the application server provides. DataSource instances
          * are also a good candidate for caching as an instance
          * variable, as JNDI lookups can be expensive as well.
          */

        DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/MySQLDB");

        /*
         * The following code is what would actually be in your
         * Servlet, JSP or EJB 'service' method...where you need
         * to work with a JDBC connection.
         */

        Connection conn = null;
        Statement stmt = null;

        try {
            conn = ds.getConnection();

            /*
             * Now, use normal JDBC programming to work with
             * MySQL, making sure to close each resource when you're
             * finished with it, which allows the connection pool
             * resources to be recovered as quickly as possible
             */

            stmt = conn.createStatement();
            stmt.execute("SOME SQL QUERY");

            stmt.close();
            stmt = null;

            conn.close();
            conn = null;
        } finally {
            /*
             * close any jdbc instances here that weren't
             * explicitly closed during normal code path, so
             * that we don't 'leak' resources...
             */

            if (stmt != null) {
                try {
                    stmt.close();
                } catch (sqlexception sqlex) {
                    // ignore -- as we can't do anything about it here
                }

                stmt = null;
            }

            if (conn != null) {
                try {
                    conn.close();
                } catch (sqlexception sqlex) {
                    // ignore -- as we can't do anything about it here
                }

                conn = null;
            }
        }
    }
}

<Context ....>

  ...

  <Resource name="jdbc/MySQLDB"
               auth="Container"
               type="javax.sql.DataSource"/>

  <!-- The name you used above, must match _exactly_ here!

       The connection pool will be bound into JNDI with the name
       "java:/comp/env/jdbc/MySQLDB"
  -->

  <ResourceParams name="jdbc/MySQLDB">
    <parameter>
      <name>factory</name>
      <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
    </parameter>

    <!-- Don't set this any higher than max_connections on your
         MySQL server, usually this should be a 10 or a few 10's
         of connections, not hundreds or thousands -->

    <parameter>
      <name>maxActive</name>
      <value>10</value>
    </parameter>

    <!-- You don't want to many idle connections hanging around
         if you can avoid it, only enough to soak up a spike in
         the load -->

    <parameter>
      <name>maxIdle</name>
      <value>5</value>
    </parameter>

    <!-- Don't use autoReconnect=true, it's going away eventually
         and it's a crutch for older connection pools that couldn't
         test connections. You need to decide if your application is
         supposed to deal with SQLExceptions (hint, it should), and
         how much of a performance penalty you're willing to pay
         to ensure 'freshness' of the connection -->

    <parameter>
      <name>validationQuery</name>
      <value>SELECT 1</value>
    </parameter>

   <!-- The most conservative approach is to test connections
        before they're given to your application. For most applications
        this is okay, the query used above is very small and takes
        no real server resources to process, other than the time used
        to traverse the network.

        If you have a high-load application you'll need to rely on
        something else. -->

    <parameter>
      <name>testOnBorrow</name>
      <value>true</value>
    </parameter>

   <!-- Otherwise, or in addition to testOnBorrow, you can test
        while connections are sitting idle -->

    <parameter>
      <name>testWhileIdle</name>
      <value>true</value>
    </parameter>

    <!-- You have to set this value, otherwise even though
         you've asked connections to be tested while idle,
         the idle evicter thread will never run -->

    <parameter>
      <name>timeBetweenEvictionRunsMillis</name>
      <value>10000</value>
    </parameter>

    <!-- Don't allow connections to hang out idle too long,
         never longer than what wait_timeout is set to on the
         server...A few minutes or even fraction of a minute
         is sometimes okay here, it depends on your application
         and how much spikey load it will see -->

    <parameter>
      <name>minEvictableIdleTimeMillis</name>
      <value>60000</value>
    </parameter>

    <!-- Username and password used when connecting to MySQL -->

    <parameter>
     <name>username</name>
     <value>someuser</value>
    </parameter>

    <parameter>
     <name>password</name>
     <value>somepass</value>
    </parameter>

    <!-- Class name for the Connector/J driver -->

    <parameter>
       <name>driverClassName</name>
       <value>com.mysql.jdbc.Driver</value>
    </parameter>

    <!-- The JDBC connection url for connecting to MySQL, notice
         that if you want to pass any other MySQL-specific parameters
         you should pass them here in the URL, setting them using the
         parameter tags above will have no effect, you will also
         need to use &amp; to separate parameter values as the
         ampersand is a reserved character in XML -->

    <parameter>
      <name>url</name>
      <value>jdbc:mysql://localhost:3306/test</value>
    </parameter>

  </ResourceParams>
</Context>

Error: java.sql.SQLException: Cannot load JDBC driver class 'null ' SQL
state: null 

<datasources>
    <local-tx-datasource>
        <!-- This connection pool will be bound into JNDI with the name
             "java:/MySQLDB" -->

        <jndi-name>MySQLDB</jndi-name>
        <connection-url>jdbc:mysql://localhost:3306/dbname</connection-url>
        <driver-class>com.mysql.jdbc.Driver</driver-class>
        <user-name>user</user-name>
        <password>pass</password>

        <min-pool-size>5</min-pool-size>

        <!-- Don't set this any higher than max_connections on your
         MySQL server, usually this should be a 10 or a few 10's
         of connections, not hundreds or thousands -->

        <max-pool-size>20</max-pool-size>

        <!-- Don't allow connections to hang out idle too long,
         never longer than what wait_timeout is set to on the
         server...A few minutes is usually okay here,
         it depends on your application
         and how much spikey load it will see -->

        <idle-timeout-minutes>5</idle-timeout-minutes>

        <!-- If you're using Connector/J 3.1.8 or newer, you can use
             our implementation of these to increase the robustness
             of the connection pool. -->

        <exception-sorter-class-name>com.mysql.jdbc.integration.jboss.ExtendedMysqlExceptionSorter</exception-sorter-class-name>
        <valid-connection-checker-class-name>com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker</valid-connection-checker-class-name>

    </local-tx-datasource>
</datasources> 

Esta sección describe cómo arreglar problemas que puede encontrar al usar Connector/J.

SQLException: Server configuration denies access to data source
SQLState: 08001
VendorError: 0

GRANT ALL PRIVILEGES ON [dbname].* to
                '[user]'@'[hostname]' identified by
                '[password]'

SQLException: Cannot connect to MySQL server on host:3306.
Is there a MySQL server running on the machine/port you
are trying to connect to?

(java.security.AccessControlException)
SQLState: 08S01
VendorError: 0 

public void doBusinessOp() throws SQLException {
        Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;

        //
        // How many times do you want to retry the transaction
        // (or at least _getting_ a connection)?
        //
        int retryCount = 5;

        boolean transactionCompleted = false;

        do {
            try {
                conn = getConnection(); // assume getting this from a
                                        // javax.sql.DataSource, or the
                                        // java.sql.DriverManager

                conn.setAutoCommit(false);

                //
                // Okay, at this point, the 'retry-ability' of the
                // transaction really depends on your application logic,
                // whether or not you're using autocommit (in this case
                // not), and whether you're using transacational storage
                // engines
                //
                // For this example, we'll assume that it's _not_ safe
                // to retry the entire transaction, so we set retry count
                // to 0 at this point
                //
                // If you were using exclusively transaction-safe tables,
                // or your application could recover from a connection going
                // bad in the middle of an operation, then you would not
                // touch 'retryCount' here, and just let the loop repeat
                // until retryCount == 0.
                //
                retryCount = 0;

                stmt = conn.createStatement();

                String query = "SELECT foo FROM bar ORDER BY baz";

                rs = stmt.executeQuery(query);

                while (rs.next()) {
                }

                rs.close();
                rs = null;

                stmt.close();
                stmt = null;

                conn.commit();
                conn.close();
                conn = null;

                transactionCompleted = true;
            } catch (SQLException sqlEx) {

                //
                // The two SQL states that are 'retry-able' are 08S01
                // for a communications error, and 41000 for deadlock.
                //
                // Only retry if the error was due to a stale connection,
                // communications problem or deadlock
                //

                String sqlState = sqlEx.getSQLState();

                if ("08S01".equals(sqlState) || "41000".equals(sqlState)) {
                    retryCount--;
                } else {
                    retryCount = 0;
                }
            } finally {
                if (rs != null) {
                    try {
                        rs.close();
                    } catch (SQLException sqlEx) {
                        // You'd probably want to log this . . .
                    }
                }

                if (stmt != null) {
                    try {
                        stmt.close();
                    } catch (SQLException sqlEx) {
                        // You'd probably want to log this as well . . .
                    }
                }

                if (conn != null) {
                    try {
                        //
                        // If we got here, and conn is not null, the
                        // transaction should be rolled back, as not
                        // all work has been done

                        try {
                            conn.rollback();
                        } finally {
                            conn.close();
                        }
                    } catch (SQLException sqlEx) {
                        //
                        // If we got an exception here, something
                        // pretty serious is going on, so we better
                        // pass it up the stack, rather than just
                        // logging it. . .

                        throw sqlEx;
                    }
                }
            }
        } while (!transactionCompleted && (retryCount > 0));
    }

public static void main(String[] args) throws Exception {
      new MyBugReport().run();
 }

# Changelog
# $Id: CHANGES,v 1.38.4.206 2005/05/12 15:25:54 mmatthews Exp $

05-17-05 - Version 3.2.1-alpha

    - Autoreconnect functionality (i.e. autoReconnect=true) is now deprecated.
      An exception will be thrown if you try and use it, use 
      'enableDeprecatedAutoreconnect=true' to still use autoReconnect. However
      this feature will be removed in Connector/J 3.3, see the manual for 
      solutions that don't require autoReconnect to be used.

    - Driver now checks if server variable 'init_connect' is set, and if so
      checks autocommit setting, and applies it.
  
    - If connected to server > 5.0.x, and Statement.setFetchSize( > 0), the
      driver will try and use server prepared statements and fetch
      statements using result set 'cursors'.
  
    - ServerPreparedStatements now correctly 'stream' BLOB/CLOB data to the
      server. You can configure the threshold chunk size using the
      JDBC URL property 'blobSendChunkSize' (the default is one megabyte).
  
    - Support sql mode NO_BACKSLASH_ESCAPES with non-server-side prepared
      statements.

12-23-04 - Version 3.2.0-alpha

    - Fixed incorrect return values from DatabaseMetaData.supportsCatalogIn*().
    
    - Support for 'cursor' based result sets when using ServerPreparedStatements
      and MySQL 5.0 or newer. Result set needs to be forward-only, and a non-zero
      fetch size for this feature to be enabled.
      
    - Refactoring of where logic for prepared statement, server-prepared 
      statement lives.

10-07-05 - Version 3.1.11-stable

    - Fixed BUG#11629 - Spurious "!" on console when character
      encoding is "utf8".
      
    - Fixed statements generated for testcases missing ";" for
      "plain" statements.
      
    - Fixed BUG#11663 - Incorrect generation of testcase scripts 
      for server-side prepared statements.
      
    - Fixed regression caused by fix for BUG#11552 that caused driver
      to return incorrect values for unsigned integers when those 
      integers where within the range of the positive signed type.
    
    - Moved source code to svn repo.
    
    - Fixed BUG#11797 - Escape tokenizer doesn't respect stacked single quotes
      for escapes.
  
    - GEOMETRY type not recognized when using server-side prepared statements.
    
    - Fixed BUG#11879 -- ReplicationConnection won't switch to slave, throws 
      "Catalog can't be null" exception.
      
    - Fixed BUG#12218, properties shared between master and slave with 
      replication connection.
      
    - Fixed BUG#10630, Statement.getWarnings() fails with NPE if statement 
      has been closed.
      
    - Only get char[] from SQL in PreparedStatement.ParseInfo() when needed.
    
    - Fixed BUG#12104 - Geometry types not handled with server-side prepared 
      statements.
      
    - Fixed BUG#11614 - StringUtils.getBytes() doesn't work when using 
      multibyte character encodings and a length in  _characters_ is 
      specified.
      
    - Fixed BUG#11798 - Pstmt.setObject(...., Types.BOOLEAN) throws exception.
    
    - Fixed BUG#11976 - maxPerformance.properties mis-spells 
      "elideSetAutoCommits".
  
    - Fixed BUG#11575 -- DBMD.storesLower/Mixed/UpperIdentifiers()
      reports incorrect values for servers deployed on Windows.
  
    - Fixed BUG#11190 - ResultSet.moveToCurrentRow() fails to work when 
      preceeded by a call to ResultSet.moveToInsertRow().
  
    - Fixed BUG#11115, VARBINARY data corrupted when using server-side
      prepared statements and .setBytes().

    - Fixed BUG#12229 - explainSlowQueries hangs with server-side
      prepared statements.
  
    - Fixed BUG#11498 - Escape processor didn't honor strings demarcated
      with double quotes.
  
    - Lifted restriction of changing streaming parameters with server-side
      prepared statements. As long as _all_ streaming parameters were set
      before execution, .clearParameters() does not have to be called. 
      (due to limitation of client/server protocol, prepared statements
       can not reset _individual_ stream data on the server side).
   
    - Reworked Field class, *Buffer, and MysqlIO to be aware of field
      lengths > Integer.MAX_VALUE.
  
    - Updated DBMD.supportsCorrelatedQueries() to return true for versions > 
      4.1, supportsGroupByUnrelated() to return true and 
      getResultSetHoldability() to return HOLD_CURSORS_OVER_COMMIT.
  
    - Fixed BUG#12541 - Handling of catalog argument in 
      DatabaseMetaData.getIndexInfo(), which also means changes to the following
      methods in DatabaseMetaData:
  
    - getBestRowIdentifier()
    - getColumns()
    - getCrossReference()
    - getExportedKeys()
    - getImportedKeys()
    - getIndexInfo()
    - getPrimaryKeys()
    - getProcedures() (and thus indirectly getProcedureColumns())
    - getTables()
  
      The "catalog" argument in all of these methods now behaves in the following
      way:
  
        - Specifying NULL means that catalog will not be used to filter the
          results (thus all databases will be searched), unless you've
          set "nullCatalogMeansCurrent=true" in your JDBC URL properties.
      
        - Specifying "" means "current" catalog, even though this isn't quite
          JDBC spec compliant, it's there for legacy users.
      
        - Specifying a catalog works as stated in the API docs.
    
        - Made Connection.clientPrepare() available from "wrapped" connections
          in the jdbc2.optional package (connections built by 
          ConnectionPoolDataSource instances).
      
    - Added Connection.isMasterConnection() for clients to be able to determine
      if a multi-host master/slave connection is connected to the first host
      in the list.
      
    - Fixed BUG#12753 - Tokenizer for "=" in URL properties was causing
      sessionVariables=.... to be parameterized incorrectly.

    - Fixed BUG#11781, foreign key information that is quoted is 
      parsed incorrectly when DatabaseMetaData methods use that
      information.
      
    - The "sendBlobChunkSize" property is now clamped to "max_allowed_packet"
      with consideration of stream buffer size and packet headers to avoid
      PacketTooBigExceptions when "max_allowed_packet" is similar in size
      to the default "sendBlobChunkSize" which is 1M.
      
    - CallableStatement.clearParameters() now clears resources associated
      with INOUT/OUTPUT parameters as well as INPUT parameters.
      
    - Fixed BUG#12417 - Connection.prepareCall() is database name 
      case-sensitive (on Windows systems).
      
    - Fixed BUG#12752 - Cp1251 incorrectly mapped to win1251 for 
      servers newer than 4.0.x.
      
    - Fixed BUG#12970 - java.sql.Types.OTHER returned for 
      BINARY and VARBINARY columns when using 
      DatabaseMetaData.getColumns(). 
  
    - ServerPreparedStatement.getBinding() now checks if the statement
      is closed before attempting to reference the list of parameter
      bindings, to avoid throwing a NullPointerException.
      
    - Fixed BUG#13277 - ResultSetMetaData from 
      Statement.getGeneratedKeys() caused NullPointerExceptions to be
      thrown whenever a method that required a connection reference
      was called.
      
    - Backport of Field class, ResultSetMetaData.getColumnClassName(),
      and ResultSet.getObject(int) changes from 5.0 branch to fix
      behavior surrounding VARCHAR BINARY/VARBINARY and related
      types.
      
    - Fixed NullPointerException when converting "catalog" parameter
      in many DatabaseMetaDataMethods to byte[]s (for the result set)
      when the parameter is null. ("null" isn't technically allowed
      by the JDBC specification, but we've historically allowed it).
      
    - Backport of VAR[BINARY|CHAR] [BINARY] types detection from 
      5.0 branch.
    
    - Read response in MysqlIO.sendFileToServer(), even if the 
      local file can't be opened, otherwise next query issued
      will fail, because it's reading the response to the empty
      LOAD DATA INFILE packet sent to the server.
      
    - Workaround for BUG#13374 - ResultSet.getStatement() 
      on closed result set returns NULL (as per JDBC 4.0 spec,
      but not backwards-compatible). Set the connection property
      "retainStatementAfterResultSetClose" to "true" to be able
      to retrieve a ResultSet's statement after the ResultSet has
      been closed via .getStatement() (the default is "false", to
      be JDBC-compliant and to reduce the chance that code using
      JDBC leaks Statement instances).
      
    - Fixed BUG#13453 - URL configuration parameters don't allow
      '&' or '=' in their values. The JDBC driver now parses 
      configuration parameters as if they are encoded using the 
      application/x-www-form-urlencoded format as specified
      by java.net.URLDecoder - 
      http://java.sun.com/j2se/1.5.0/docs/api/java/net/URLDecoder.html
      
      If the '%' character is present in a configuration property,
      it must now be represented as %25, which is the encoded form
      of '%' when using application/x-www-form-urlencoded encoding.
      
    - The configuration property "sessionVariables" now allows you to
      specify variables that start with the "@" sign.
      
    - Fixed BUG#13043 - when 'gatherPerfMetrics' is enabled for 
      servers older than 4.1.0, a NullPointerException is thrown from 
      the constructor of ResultSet if the query doesn't use any tables.

06-23-05 - Version 3.1.10-stable

    - Fixed connecting without a database specified raised an exception
      in MysqlIO.changeDatabaseTo().
  
    - Initial implemention of ParameterMetadata for 
      PreparedStatement.getParameterMetadata(). Only works fully
      for CallableStatements, as current server-side prepared statements
      return every parameter as a VARCHAR type.
    
06-22-05 - Version 3.1.9-stable

    - Overhaul of character set configuration, everything now
      lives in a properties file.
  
    - Driver now correctly uses CP932 if available on the server
      for Windows-31J, CP932 and MS932 java encoding names, 
      otherwise it resorts to SJIS, which is only a close 
      approximation. Currently only MySQL-5.0.3 and newer (and
      MySQL-4.1.12 or .13, depending on when the character set
      gets backported) can reliably support any variant of CP932.

    - Fixed BUG#9064 - com.mysql.jdbc.PreparedStatement.ParseInfo 
      does unnecessary call to toCharArray().

    - Fixed Bug#10144 - Memory leak in ServerPreparedStatement if 
      serverPrepare() fails.
 
    - Actually write manifest file to correct place so it ends up
      in the binary jar file.

    - Added "createDatabaseIfNotExist" property (default is "false"),
      which will cause the driver to ask the server to create the 
      database specified in the URL if it doesn't exist. You must have
      the appropriate privileges for database creation for this to
      work.

    - Fixed BUG#10156 - Unsigned SMALLINT treated as signed for ResultSet.getInt(),
      fixed all cases for UNSIGNED integer values and server-side prepared statements,
      as well as ResultSet.getObject() for UNSIGNED TINYINT.
 
    - Fixed BUG#10155, double quotes not recognized when parsing 
      client-side prepared statements.
  
    - Made enableStreamingResults() visible on 
      com.mysql.jdbc.jdbc2.optional.StatementWrapper.
  
    - Made ServerPreparedStatement.asSql() work correctly so auto-explain
      functionality would work with server-side prepared statements.
  
    - Made JDBC2-compliant wrappers public in order to allow access to
      vendor extensions.
  
    - Cleaned up logging of profiler events, moved code to dump a profiler
      event as a string to com.mysql.jdbc.log.LogUtils so that third
      parties can use it.
  
    - DatabaseMetaData.supportsMultipleOpenResults() now returns true. The
      driver has supported this for some time, DBMD just missed that fact.
  
    - Fixed BUG#10310 - Driver doesn't support {?=CALL(...)} for calling
      stored functions. This involved adding support for function retrieval
      to DatabaseMetaData.getProcedures() and getProcedureColumns() as well.
      
    - Fixed BUG#10485, SQLException thrown when retrieving YEAR(2) 
      with ResultSet.getString(). The driver will now always treat YEAR types
      as java.sql.Dates and return the correct values for getString(). 
      Alternatively, the "yearIsDateType" connection property can be set to
      "false" and the values will be treated as SHORTs.
  
    - The datatype returned for TINYINT(1) columns when "tinyInt1isBit=true" 
      (the default) can be switched between Types.BOOLEAN and Types.BIT
      using the new configuration property "transformedBitIsBoolean", which
      defaults to "false". If set to "false" (the default), 
      DatabaseMetaData.getColumns() and ResultSetMetaData.getColumnType() 
      will return Types.BOOLEAN for TINYINT(1) columns. If "true", 
      Types.BOOLEAN will be returned instead. Irregardless of this configuration
      property, if "tinyInt1isBit" is enabled, columns with the type TINYINT(1)
      will be returned as java.lang.Boolean instances from 
      ResultSet.getObject(..), and ResultSetMetaData.getColumnClassName()
      will return "java.lang.Boolean".

    - Fixed BUG#10496 - SQLException is thrown when using property 
      "characterSetResults" with cp932 or eucjpms.
      
    - Reorganized directory layout, sources now in "src" folder,
      don't pollute parent directory when building, now output goes
      to "./build", distribution goes to "./dist".
      
    - Added support/bug hunting feature that generates .sql test
      scripts to STDERR when "autoGenerateTestcaseScript" is set
      to "true".
      
    - Fixed BUG#10850 - 0-length streams not sent to server when
      using server-side prepared statements.
    
    - Setting "cachePrepStmts=true" now causes the Connection to also 
      cache the check the driver performs to determine if a prepared 
      statement can be server-side or not, as well as caches server-side
      prepared statements for the lifetime of a connection. As before,
      the "prepStmtCacheSize" parameter controls the size of these
      caches.
      
    - Try to handle OutOfMemoryErrors more gracefully. Although not
      much can be done, they will in most cases close the connection
      they happened on so that further operations don't run into 
      a connection in some unknown state. When an OOM has happened, 
      any further operations on the connection will fail with a 
      "Connection closed" exception that will also list the OOM exception
      as the reason for the implicit connection close event.
      
    - Don't send COM_RESET_STMT for each execution of a server-side
      prepared statement if it isn't required.
      
    - Driver detects if you're running MySQL-5.0.7 or later, and does
      not scan for "LIMIT ?[,?]" in statements being prepared, as the
      server supports those types of queries now.
      
    - Fixed BUG#11115, Varbinary data corrupted when using server-side
      prepared statements and ResultSet.getBytes().
      
    - Connection.setCatalog() is now aware of the "useLocalSessionState"
      configuration property, which when set to true will prevent
      the driver from sending "USE ..." to the server if the requested
      catalog is the same as the current catalog.
      
    - Added the following configuration bundles, use one or many via
      the "useConfigs" configuration property:
    
        * maxPerformance -- maximum performance without being reckless
        * solarisMaxPerformance -- maximum performance for Solaris,
                                   avoids syscalls where it can
        * 3-0-Compat -- Compatibility with Connector/J 3.0.x functionality
        
    - Added "maintainTimeStats" configuration property (defaults to "true"),
      which tells the driver whether or not to keep track of the last query time
      and the last successful packet sent to the server's time. If set to
      false, removes two syscalls per query.
    
    - Fixed BUG#11259, autoReconnect ping causes exception on connection 
      startup.
      
    - Fixed BUG#11360 Connector/J dumping query into SQLException twice
    
    - Fixed PreparedStatement.setClob() not accepting null as a parameter.
    
    - Fixed BUG#11411 - Production package doesn't include JBoss integration 
      classes.
      
    - Removed nonsensical "costly type conversion" warnings when using 
      usage advisor.


04-14-05 - Version 3.1.8-stable

    - Fixed DatabaseMetaData.getTables() returning views when they were
      not asked for as one of the requested table types.

    - Added support for new precision-math DECIMAL type in MySQL >= 5.0.3.

    - Fixed ResultSet.getTime() on a NULL value for server-side prepared
      statements throws NPE.

    - Made Connection.ping() a public method.

    - Fixed Bug#8868, DATE_FORMAT() queries returned as BLOBs from getObject().

    - ServerPreparedStatements now correctly 'stream' BLOB/CLOB data to the
      server. You can configure the threshold chunk size using the
      JDBC URL property 'blobSendChunkSize' (the default is one megabyte).

    - BlobFromLocator now uses correct identifier quoting when generating
      prepared statements.

    - Server-side session variables can be preset at connection time by
      passing them as a comma-delimited list for the connection property
      'sessionVariables'.

    - Fixed regression in ping() for users using autoReconnect=true.

    - Fixed BUG#9040 - PreparedStatement.addBatch() doesn't work with server-side
      prepared statements and streaming BINARY data.

    - Fixed BUG#8800 - DBMD.supportsMixedCase*Identifiers() returns wrong
      value on servers running on case-sensitive filesystems.

    - Fixed BUG#9206, can not use 'UTF-8' for characterSetResults
      configuration property.

    - Fixed BUG#9236, a continuation of BUG#8868, where functions used in queries
      that should return non-string types when resolved by temporary tables suddenly
      become opaque binary strings (work-around for server limitation). Also fixed
      fields with type of CHAR(n) CHARACTER SET BINARY to return correct/matching
      classes for RSMD.getColumnClassName() and ResultSet.getObject().

    - Fixed BUG#8792 - DBMD.supportsResultSetConcurrency() not returning
      true for forward-only/read-only result sets (we obviously support this).

    - Fixed BUG#8803, 'DATA_TYPE' column from DBMD.getBestRowIdentifier()
      causes ArrayIndexOutOfBoundsException when accessed (and in fact, didn't
      return any value).

    - Check for empty strings ('') when converting char/varchar column data to numbers,
      throw exception if 'emptyStringsConvertToZero' configuration property is set
      to 'false' (for backwards-compatibility with 3.0, it is now set to 'true'
      by default, but will most likely default to 'false' in 3.2).

    - Fixed BUG#9320 - PreparedStatement.getMetaData() inserts blank row in database
      under certain conditions when not using server-side prepared statements.

    - Connection.canHandleAsPreparedStatement() now makes 'best effort' to distinguish
      LIMIT clauses with placeholders in them from ones without in order to have fewer
      false positives when generating work-arounds for statements the server cannot
      currently handle as server-side prepared statements.

    - Fixed build.xml to not compile log4j logging if log4j not available.

    - Added support for the c3p0 connection pool's (http://c3p0.sf.net/)
      validation/connection checker interface which uses the lightweight
      'COM_PING' call to the server if available. To use it, configure your
      c3p0 connection pool's 'connectionTesterClassName' property to use
      'com.mysql.jdbc.integration.c3p0.MysqlConnectionTester'.

    - Better detection of LIMIT inside/outside of quoted strings so that
      the driver can more correctly determine whether a prepared statement
      can be prepared on the server or not.

    - Fixed BUG#9319 - Stored procedures with same name in
      different databases confuse the driver when it tries to determine
      parameter counts/types.

    - Added finalizers to ResultSet and Statement implementations to be JDBC
      spec-compliant, which requires that if not explicitly closed, these
      resources should be closed upon garbage collection.

    - Fixed BUG#9682 - Stored procedures with DECIMAL parameters with
      storage specifications that contained "," in them would fail.

    - PreparedStatement.setObject(int, Object, int type, int scale) now
      uses scale value for BigDecimal instances.

    - Fixed BUG#9704 - Statement.getMoreResults() could throw NPE when
      existing result set was .close()d.

    - The performance metrics feature now gathers information about
      number of tables referenced in a SELECT.

    - The logging system is now automatically configured. If the value has
      been set by the user, via the URL property "logger" or the system
      property "com.mysql.jdbc.logger", then use that, otherwise, autodetect
      it using the following steps:

         Log4j, if it's available,
         Then JDK1.4 logging,
         Then fallback to our STDERR logging.

    - Fixed BUG#9778, DBMD.getTables() shouldn't return tables if views
      are asked for, even if the database version doesn't support views.

    - Fixed driver not returning 'true' for '-1' when ResultSet.getBoolean()
      was called on result sets returned from server-side prepared statements.

    - Added a Manifest.MF file with implementation information to the .jar
      file.

    - More tests in Field.isOpaqueBinary() to distinguish opaque binary (i.e.
      fields with type CHAR(n) and CHARACTER SET BINARY) from output of
      various scalar and aggregate functions that return strings.

    - Fixed BUG#9917 - Should accept null for catalog (meaning use current)
      in DBMD methods, even though it's not JDBC-compliant for legacy's sake.
      Disable by setting connection property "nullCatalogMeansCurrent" to "false"
      (which will be the default value in C/J 3.2.x).

    - Fixed BUG#9769 - Should accept null for name patterns in DBMD (meaning "%"),
      even though it isn't JDBC compliant, for legacy's sake. Disable by setting
      connection property "nullNamePatternMatchesAll" to "false" (which will be
      the default value in C/J 3.2.x).

02-18-05 - Version 3.1.7-stable

    - Fixed BUG#7686, Timestamp key column data needed "_binary'"
      stripped for UpdatableResultSet.refreshRow().

    - Fixed BUG#7715 - Timestamps converted incorrectly to strings
      with Server-side prepared statements and updatable result sets.

    - Detect new sql_mode variable in string form (it used to be
      integer) and adjust quoting method for strings appropriately.

    - Added 'holdResultsOpenOverStatementClose' property (default is
      false), that keeps result sets open over statement.close() or new
      execution on same statement (suggested by Kevin Burton).

    - Fixed BUG#7952 -- Infinite recursion when 'falling back' to master
      in failover configuration.

    - Disable multi-statements (if enabled) for MySQL-4.1 versions prior
      to version 4.1.10 if the query cache is enabled, as the server
      returns wrong results in this configuration.

    - Fixed duplicated code in configureClientCharset() that prevented
      useOldUTF8Behavior=true from working properly.

    - Removed 'dontUnpackBinaryResults' functionality, the driver now
      always stores results from server-side prepared statements as-is
      from the server and unpacks them on demand.

    - Fixed BUG#8096 where emulated locators corrupt binary data
      when using server-side prepared statements.

    - Fixed synchronization issue with
      ServerPreparedStatement.serverPrepare() that could cause
      deadlocks/crashes if connection was shared between threads.

    - By default, the driver now scans SQL you are preparing via all
      variants of Connection.prepareStatement() to determine if it is a
      supported type of statement to prepare on the server side, and if
      it is not supported by the server, it instead prepares it as a
      client-side emulated prepared statement (BUG#4718). You can
      disable this by passing 'emulateUnsupportedPstmts=false' in your
      JDBC URL.

    - Remove _binary introducer from parameters used as in/out
      parameters in CallableStatement.

    - Always return byte[]s for output parameters registered as *BINARY.

    - Send correct value for 'boolean' "true" to server for
      PreparedStatement.setObject(n, "true", Types.BIT).

    - Fixed bug with Connection not caching statements from
      prepareStatement() when the statement wasn't a server-side
      prepared statement.

    - Choose correct 'direction' to apply time adjustments when both
      client and server are in GMT timezone when using
      ResultSet.get(..., cal) and PreparedStatement.set(...., cal).

    - Added 'dontTrackOpenResources' option (default is false, to be
      JDBC compliant), which helps with memory use for non-well-behaved
      apps (i.e applications which don't close Statements when they
      should).

    - Fixed BUG#8428 - ResultSet.getString() doesn't maintain format
      stored on server, bug fix only enabled when 'noDatetimeStringSync'
      property is set to 'true' (the default is 'false').

    - Fixed NPE in ResultSet.realClose() when using usage advisor and
      result set was already closed.

    - Fixed BUG#8487 - PreparedStatements not creating streaming result
      sets.

    - Don't pass NULL to String.valueOf() in
      ResultSet.getNativeConvertToString(), as it stringifies it (i.e.
      returns "null"), which is not correct for the method in question.

    - Fixed BUG#8484 - ResultSet.getBigDecimal() throws exception
      when rounding would need to occur to set scale. The driver now
      chooses a rounding mode of 'half up' if non-rounding
      BigDecimal.setScale() fails.

    - Added 'useLocalSessionState' configuration property, when set to
      'true' the JDBC driver trusts that the application is well-behaved
      and only sets autocommit and transaction isolation levels using
      the methods provided on java.sql.Connection, and therefore can
      manipulate these values in many cases without incurring
      round-trips to the database server.

    - Added enableStreamingResults() to Statement for connection pool
      implementations that check Statement.setFetchSize() for
      specification-compliant values. Call Statement.setFetchSize(>=0)
      to disable the streaming results for that statement.

    - Added support for BIT type in MySQL-5.0.3. The driver will treat
      BIT(1-8) as the JDBC standard BIT type (which maps to
      java.lang.Boolean), as the server does not currently send enough
      information to determine the size of a bitfield when < 9 bits are
      declared. BIT(>9) will be treated as VARBINARY, and will return
      byte[] when getObject() is called.

12-23-04 - Version 3.1.6-stable

    - Fixed hang on SocketInputStream.read() with Statement.setMaxRows() and
      multiple result sets when driver has to truncate result set directly,
      rather than tacking a 'LIMIT n' on the end of it.

    - Fixed BUG#7026 - DBMD.getProcedures() doesn't respect catalog parameter.

12-02-04 - Version 3.1.5-gamma

    - Fix comparisons made between string constants and dynamic strings that
      are either toUpperCase()d or toLowerCase()d to use Locale.ENGLISH, as
      some locales 'override' case rules for English. Also use
      StringUtils.indexOfIgnoreCase() instead of .toUpperCase().indexOf(),
      avoids creating a very short-lived transient String instance.

    - Fixed BUG#5235 - Server-side prepared statements did not honor
      'zeroDateTimeBehavior' property, and would cause class-cast
      exceptions when using ResultSet.getObject(), as the all-zero string
      was always returned.

    - Fixed batched updates with server prepared statements weren't looking if
      the types had changed for a given batched set of parameters compared
      to the previous set, causing the server to return the error
      'Wrong arguments to mysql_stmt_execute()'.

    - Handle case when string representation of timestamp contains trailing '.'
      with no numbers following it.

    - Fixed BUG#5706 - Inefficient detection of pre-existing string instances
      in ResultSet.getNativeString().

    - Don't throw exceptions for Connection.releaseSavepoint().

    - Use a per-session Calendar instance by default when decoding dates
      from ServerPreparedStatements (set to old, less performant behavior by
      setting property 'dynamicCalendars=true').

    - Added experimental configuration property 'dontUnpackBinaryResults',
      which delays unpacking binary result set values until they're asked for,
      and only creates object instances for non-numerical values (it is set
      to 'false' by default). For some usecase/jvm combinations, this is
      friendlier on the garbage collector.

    - Fixed BUG#5729 - UNSIGNED BIGINT unpacked incorrectly from
      server-side prepared statement result sets.

    - Fixed BUG#6225 - ServerSidePreparedStatement allocating short-lived
      objects un-necessarily.

    - Removed un-wanted new Throwable() in ResultSet constructor due to bad
      merge (caused a new object instance that was never used for every result
      set created) - Found while profiling for BUG#6359.

    - Fixed too-early creation of StringBuffer in EscapeProcessor.escapeSQL(),
      also return String when escaping not needed (to avoid unnecssary object
      allocations). Found while profiling for BUG#6359.

    - Use null-safe-equals for key comparisons in updatable result sets.

    - Fixed BUG#6537, SUM() on Decimal with server-side prepared statement ignores
      scale if zero-padding is needed (this ends up being due to conversion to DOUBLE
      by server, which when converted to a string to parse into BigDecimal, loses all
      'padding' zeros).

    - Use DatabaseMetaData.getIdentifierQuoteString() when building DBMD
      queries.

    - Use 1MB packet for sending file for LOAD DATA LOCAL INFILE if that
      is < 'max_allowed_packet' on server.

    - Fixed BUG#6399, ResultSetMetaData.getColumnDisplaySize() returns incorrect
      values for multi-byte charsets.

    - Make auto-deserialization of java.lang.Objects stored in BLOBs
      configurable via 'autoDeserialize' property (defaults to 'false').

    - Re-work Field.isOpaqueBinary() to detect 'CHAR(n) CHARACTER SET BINARY'
      to support fixed-length binary fields for ResultSet.getObject().

    - Use our own implementation of buffered input streams to get around
      blocking behavior of java.io.BufferedInputStream. Disable this with
      'useReadAheadInput=false'.

    - Fixed BUG#6348, failing to connect to the server when one of the
      addresses for the given host name is IPV6 (which the server does
      not yet bind on). The driver now loops through _all_ IP addresses
      for a given host, and stops on the first one that accepts() a
      socket.connect().

09-04-04 - Version 3.1.4-beta

    - Fixed BUG#4510 - connector/j 3.1.3 beta does not handle integers
      correctly (caused by changes to support unsigned reads in
      Buffer.readInt() -> Buffer.readShort()).

    - Added support in DatabaseMetaData.getTables() and getTableTypes()
      for VIEWs which are now available in MySQL server version 5.0.x.

    - Fixed BUG#4642 -- ServerPreparedStatement.execute*() sometimes
      threw ArrayIndexOutOfBoundsException when unpacking field metadata.

    - Optimized integer number parsing, enable 'old' slower integer parsing
      using JDK classes via 'useFastIntParsing=false' property.

    - Added 'useOnlyServerErrorMessages' property, which causes message text
      in exceptions generated by the server to only contain the text sent by
      the server (as opposed to the SQLState's 'standard' description, followed
      by the server's error message). This property is set to 'true' by default.

    - Fixed BUG#4689 - ResultSet.wasNull() does not work for primatives if a
      previous null was returned.

    - Track packet sequence numbers if enablePacketDebug=true, and throw an
      exception if packets received out-of-order.

    - Fixed BUG#4482, ResultSet.getObject() returns wrong type for strings
      when using prepared statements.

    - Calling MysqlPooledConnection.close() twice (even though an application
      error), caused NPE. Fixed.

    - Fixed BUG#5012 -- ServerPreparedStatements dealing with return of
      DECIMAL type don't work.

    - Fixed BUG#5032 -- ResultSet.getObject() doesn't return
      type Boolean for pseudo-bit types from prepared statements on 4.1.x
      (shortcut for avoiding extra type conversion when using binary-encoded
      result sets obscurred test in getObject() for 'pseudo' bit type)

    - You can now use URLs in 'LOAD DATA LOCAL INFILE' statements, and the
      driver will use Java's built-in handlers for retreiving the data and
      sending it to the server. This feature is not enabled by default,
      you must set the 'allowUrlInLocalInfile' connection property to 'true'.

    - The driver is more strict about truncation of numerics on
      ResultSet.get*(), and will throw a SQLException when truncation is
      detected. You can disable this by setting 'jdbcCompliantTruncation' to
      false (it is enabled by default, as this functionality is required
      for JDBC compliance).

    - Added three ways to deal with all-zero datetimes when reading them from
      a ResultSet, 'exception' (the default), which throws a SQLException
      with a SQLState of 'S1009', 'convertToNull', which returns NULL instead of
      the date, and 'round', which rounds the date to the nearest closest value
      which is '0001-01-01'.

    - Fixed ServerPreparedStatement to read prepared statement metadata off
      the wire, even though it's currently a placeholder instead of using
      MysqlIO.clearInputStream() which didn't work at various times because
      data wasn't available to read from the server yet. This fixes sporadic
      errors users were having with ServerPreparedStatements throwing
      ArrayIndexOutOfBoundExceptions.

    - Use com.mysql.jdbc.Message's classloader when loading resource bundle,
      should fix sporadic issues when the caller's classloader can't locate
      the resource bundle.

07-07-04 - Version 3.1.3-beta

    - Mangle output parameter names for CallableStatements so they
      will not clash with user variable names.

    - Added support for INOUT parameters in CallableStatements.

    - Fix for BUG#4119, null bitmask sent for server-side prepared
      statements was incorrect.

    - Use SQL Standard SQL states by default, unless 'useSqlStateCodes'
      property is set to 'false'.

    - Added packet debuging code (see the 'enablePacketDebug' property
      documentation).

    - Added constants for MySQL error numbers (publicly-accessible,
      see com.mysql.jdbc.MysqlErrorNumbers), and the ability to
      generate the mappings of vendor error codes to SQLStates
      that the driver uses (for documentation purposes).

    - Externalized more messages (on-going effort).

    - Fix for BUG#4311 - Error in retrieval of mediumint column with
      prepared statements and binary protocol.

    - Support new timezone variables in MySQL-4.1.3 when
      'useTimezone=true'

    - Support for unsigned numerics as return types from prepared statements.
      This also causes a change in ResultSet.getObject() for the 'bigint unsigned'
      type, which used to return BigDecimal instances, it now returns instances
      of java.lang.BigInteger.

06-09-04 - Version 3.1.2-alpha

    - Fixed stored procedure parameter parsing info when size was
      specified for a parameter (i.e. char(), varchar()).

    - Enabled callable statement caching via 'cacheCallableStmts'
      property.

    - Fixed case when no output parameters specified for a
      stored procedure caused a bogus query to be issued
      to retrieve out parameters, leading to a syntax error
      from the server.

    - Fixed case when no parameters could cause a NullPointerException
      in CallableStatement.setOutputParameters().

    - Removed wrapping of exceptions in MysqlIO.changeUser().

    - Fixed sending of split packets for large queries, enabled nio
      ability to send large packets as well.

    - Added .toString() functionality to ServerPreparedStatement,
      which should help if you're trying to debug a query that is
      a prepared statement (it shows SQL as the server would process).

    - Added 'gatherPerformanceMetrics' property, along with properties
      to control when/where this info gets logged (see docs for more
      info).

    - ServerPreparedStatements weren't actually de-allocating
      server-side resources when .close() was called.

    - Added 'logSlowQueries' property, along with property
      'slowQueriesThresholdMillis' to control when a query should
      be considered 'slow'.

    - Correctly map output parameters to position given in
      prepareCall() vs. order implied during registerOutParameter() -
      fixes BUG#3146.

    - Correctly detect initial character set for servers >= 4.1.0

    - Cleaned up detection of server properties.

    - Support placeholder for parameter metadata for server >= 4.1.2

    - Fix for BUG#3539 getProcedures() does not return any procedures in
      result set

    - Fix for BUG#3540 getProcedureColumns() doesn't work with wildcards
      for procedure name

    - Fixed BUG#3520 -- DBMD.getSQLStateType() returns incorrect value.

    - Added 'connectionCollation' property to cause driver to issue
      'set collation_connection=...' query on connection init if default
      collation for given charset is not appropriate.

    - Fixed DatabaseMetaData.getProcedures() when run on MySQL-5.0.0 (output of
    'show procedure status' changed between 5.0.1 and 5.0.0.

    - Fixed BUG#3804 -- getWarnings() returns SQLWarning instead of DataTruncation

    - Don't enable server-side prepared statements for server version 5.0.0 or 5.0.1,
    as they aren't compatible with the '4.1.2+' style that the driver uses (the driver
    expects information to come back that isn't there, so it hangs).

02-14-04 - Version 3.1.1-alpha

    - Fixed bug with UpdatableResultSets not using client-side
    prepared statements.

    - Fixed character encoding issues when converting bytes to
      ASCII when MySQL doesn't provide the character set, and
      the JVM is set to a multi-byte encoding (usually affecting
      retrieval of numeric values).

    - Unpack 'unknown' data types from server prepared statements
      as Strings.

    - Implemented long data (Blobs, Clobs, InputStreams, Readers)
      for server prepared statements.

    - Implemented Statement.getWarnings() for MySQL-4.1 and newer
      (using 'SHOW WARNINGS').

    - Default result set type changed to TYPE_FORWARD_ONLY
      (JDBC compliance).

    - Centralized setting of result set type and concurrency.

    - Re-factored how connection properties are set and exposed
      as DriverPropertyInfo as well as Connection and DataSource
      properties.

    - Support for NIO. Use 'useNIO=true' on platforms that support
      NIO.

    - Support for SAVEPOINTs (MySQL >= 4.0.14 or 4.1.1).

    - Support for mysql_change_user()...See the changeUser() method
      in com.mysql.jdbc.Connection.

    - Reduced number of methods called in average query to be more
      efficient.

    - Prepared Statements will be re-prepared on auto-reconnect. Any errors
      encountered are postponed until first attempt to re-execute the
      re-prepared statement.

    - Ensure that warnings are cleared before executing queries
      on prepared statements, as-per JDBC spec (now that we support
      warnings).

    - Support 'old' profileSql capitalization in ConnectionProperties.
      This property is deprecated, you should use 'profileSQL' if possible.

    - Optimized Buffer.readLenByteArray() to return shared empty byte array
      when length is 0.

    - Allow contents of PreparedStatement.setBlob() to be retained
      between calls to .execute*().

    - Deal with 0-length tokens in EscapeProcessor (caused by callable
      statement escape syntax).

    - Check for closed connection on delete/update/insert row operations in
      UpdatableResultSet.

    - Fix support for table aliases when checking for all primary keys in
      UpdatableResultSet.

    - Removed useFastDates connection property.

    - Correctly initialize datasource properties from JNDI Refs, including
      explicitly specified URLs.

    - DatabaseMetaData now reports supportsStoredProcedures() for
      MySQL versions >= 5.0.0

    - Fixed stack overflow in Connection.prepareCall() (bad merge).

    - Fixed IllegalAccessError to Calendar.getTimeInMillis() in DateTimeValue
      (for JDK < 1.4).

    - Fix for BUG#1673, where DatabaseMetaData.getColumns() is not
      returning correct column ordinal info for non '%' column name patterns.

    - Merged fix of datatype mapping from MySQL type 'FLOAT' to
      java.sql.Types.REAL from 3.0 branch.

    - Detect collation of column for RSMD.isCaseSensitive().

    - Fixed sending of queries > 16M.

    - Added named and indexed input/output parameter support to CallableStatement.
      MySQL-5.0.x or newer.

    - Fixed NullPointerException in ServerPreparedStatement.setTimestamp(),
      as well as year and month descrepencies in
      ServerPreparedStatement.setTimestamp(), setDate().

    - Added ability to have multiple database/JVM targets for compliance
      and regression/unit tests in build.xml.

    - Fixed NPE and year/month bad conversions when accessing some
      datetime functionality in ServerPreparedStatements and their
      resultant result sets.

    - Display where/why a connection was implicitly closed (to
      aid debugging).

    - CommunicationsException implemented, that tries to determine
      why communications was lost with a server, and displays
      possible reasons when .getMessage() is called.

    - Fixed BUG#2359, NULL values for numeric types in binary
      encoded result sets causing NullPointerExceptions.

    - Implemented Connection.prepareCall(), and DatabaseMetaData.
      getProcedures() and getProcedureColumns().

    - Reset 'long binary' parameters in ServerPreparedStatement when
      clearParameters() is called, by sending COM_RESET_STMT to the
      server.

    - Merged prepared statement caching, and .getMetaData() support
      from 3.0 branch.

    - Fixed off-by-1900 error in some cases for
      years in TimeUtil.fastDate/TimeCreate() when unpacking results
      from server-side prepared statements.

    - Fixed BUG#2502 -- charset conversion issue in getTables().

    - Implemented multiple result sets returned from a statement
      or stored procedure.

    - Fixed BUG#2606 -- Server side prepared statements not returning
      datatype 'YEAR' correctly.

    - Enabled streaming of result sets from server-side prepared
      statements.

    - Fixed BUG#2623 -- Class-cast exception when using
      scrolling result sets and server-side prepared statements.

    - Merged unbuffered input code from 3.0.

    - Fixed ConnectionProperties that weren't properly exposed
      via accessors, cleaned up ConnectionProperties code.

    - Fixed BUG#2671, NULL fields not being encoded correctly in
      all cases in server side prepared statements.

    - Fixed rare buffer underflow when writing numbers into buffers
      for sending prepared statement execution requests.

    - Use DocBook version of docs for shipped versions of drivers.

02-18-03 - Version 3.1.0-alpha

    - Added 'requireSSL' property.

    - Added 'useServerPrepStmts' property (default 'false'). The
      driver will use server-side prepared statements when the
      server version supports them (4.1 and newer) when this
      property is set to 'true'. It is currently set to 'false'
      by default until all bind/fetch functionality has been
      implemented. Currently only DML prepared statements are
      implemented for 4.1 server-side prepared statements.

    - Track open Statements, close all when Connection.close()
      is called (JDBC compliance).

06-23-05 - Version 3.0.17-ga

    - Fixed BUG#5874, Timestamp/Time conversion goes in the wrong 'direction'
      when useTimeZone='true' and server timezone differs from client timezone.

    - Fixed BUG#7081, DatabaseMetaData.getIndexInfo() ignoring 'unique'
      parameter.

    - Support new protocol type 'MYSQL_TYPE_VARCHAR'.

    - Added 'useOldUTF8Behavoior' configuration property, which causes
      JDBC driver to act like it did with MySQL-4.0.x and earlier when
      the character encoding is 'utf-8' when connected to MySQL-4.1 or
      newer.

    - Fixed BUG#7316 - Statements created from a pooled connection were
      returning physical connection instead of logical connection when
      getConnection() was called.

    - Fixed BUG#7033 - PreparedStatements don't encode Big5 (and other
      multi-byte) character sets correctly in static SQL strings.

    - Fixed BUG#6966, connections starting up failed-over (due to down master)
      never retry master.

    - Fixed BUG#7061, PreparedStatement.fixDecimalExponent() adding extra
      '+', making number unparseable by MySQL server.

    - Fixed BUG#7686, Timestamp key column data needed "_binary'" stripped for
      UpdatableResultSet.refreshRow().

    - Backported SQLState codes mapping from Connector/J 3.1, enable with
      'useSqlStateCodes=true' as a connection property, it defaults to
      'false' in this release, so that we don't break legacy applications (it
      defaults to 'true' starting with Connector/J 3.1).

    - Fixed BUG#7601, PreparedStatement.fixDecimalExponent() adding extra
      '+', making number unparseable by MySQL server.

    - Escape sequence {fn convert(..., type)} now supports ODBC-style types
      that are prepended by 'SQL_'.

    - Fixed duplicated code in configureClientCharset() that prevented
      useOldUTF8Behavior=true from working properly.

    - Handle streaming result sets with > 2 billion rows properly by fixing
      wraparound of row number counter.

    - Fixed BUG#7607 - MS932, SHIFT_JIS and Windows_31J not recog. as
      aliases for sjis.

    - Fixed BUG#6549 (while fixing #7607), adding 'CP943' to aliases for
      sjis.

    - Fixed BUG#8064, which requires hex escaping of binary data when using
      multi-byte charsets with prepared statements.

    - Fixed BUG#8812, NON_UNIQUE column from DBMD.getIndexInfo() returned
      inverted value.

    - Workaround for server BUG#9098 - default values of CURRENT_* for
      DATE/TIME/TIMESTAMP/TIMESTAMP columns can't be distinguished from
      'string' values, so UpdatableResultSet.moveToInsertRow() generates
      bad SQL for inserting default values.

    - Fixed BUG#8629 - 'EUCKR' charset is sent as 'SET NAMES euc_kr' which
      MySQL-4.1 and newer doesn't understand.

    - DatabaseMetaData.supportsSelectForUpdate() returns correct value based
      on server version.

    - Use hex escapes for PreparedStatement.setBytes() for double-byte charsets
      including 'aliases' Windows-31J, CP934, MS932.

    - Added support for the "EUC_JP_Solaris" character encoding, which maps
      to a MySQL encoding of "eucjpms" (backported from 3.1 branch). This only
      works on servers that support eucjpms, namely 5.0.3 or later.

11-15-04 - Version 3.0.16-ga

    - Re-issue character set configuration commands when re-using pooled
      connections and/or Connection.changeUser() when connected to MySQL-4.1
      or newer.

    - Fixed ResultSetMetaData.isReadOnly() to detect non-writable columns
      when connected to MySQL-4.1 or newer, based on existence of 'original'
      table and column names.

    - Fixed BUG#5664, ResultSet.updateByte() when on insert row
      throws ArrayOutOfBoundsException.

    - Fixed DatabaseMetaData.getTypes() returning incorrect (i.e. non-negative)
      scale for the 'NUMERIC' type.

    - Fixed BUG#6198, off-by-one bug in Buffer.readString(string).

    - Made TINYINT(1) -> BIT/Boolean conversion configurable via 'tinyInt1isBit'
      property (default 'true' to be JDBC compliant out of the box).

    - Only set 'character_set_results' during connection establishment if
      server version >= 4.1.1.

    - Fixed regression where useUnbufferedInput was defaulting to 'false'.

    - Fixed BUG#6231, ResultSet.getTimestamp() on a column with TIME in it
      fails.

09-04-04 - Version 3.0.15-production

    - Fixed BUG#4010 - StringUtils.escapeEasternUnicodeByteStream is still
      broken for GBK

    - Fixed BUG#4334 - Failover for autoReconnect not using port #'s for any
      hosts, and not retrying all hosts. (WARN: This required a change to
      the SocketFactory connect() method signature, which is now

       public Socket connect(String host, int portNumber, Properties props)

      therefore any third-party socket factories will have to be changed
      to support this signature.

    - Logical connections created by MysqlConnectionPoolDataSource will
      now issue a rollback() when they are closed and sent back to the pool.
      If your application server/connection pool already does this for you, you
      can set the 'rollbackOnPooledClose' property to false to avoid the
      overhead of an extra rollback().

    - Removed redundant calls to checkRowPos() in ResultSet.

    - Fixed BUG#4742, 'DOUBLE' mapped twice in DBMD.getTypeInfo().

    - Added FLOSS license exemption.

    - Fixed BUG#4808, calling .close() twice on a PooledConnection causes NPE.

    - Fixed BUG#4138 and BUG#4860, DBMD.getColumns() returns incorrect JDBC
      type for unsigned columns. This affects type mappings for all numeric
      types in the RSMD.getColumnType() and RSMD.getColumnTypeNames() methods
      as well, to ensure that 'like' types from DBMD.getColumns() match up
      with what RSMD.getColumnType() and getColumnTypeNames() return.

    - 'Production' - 'GA' in naming scheme of distributions.

    - Fix for BUG#4880, RSMD.getPrecision() returning 0 for non-numeric types
      (should return max length in chars for non-binary types, max length
      in bytes for binary types). This fix also fixes mapping of
      RSMD.getColumnType() and RSMD.getColumnTypeName() for the BLOB types based
      on the length sent from the server (the server doesn't distinguish between
      TINYBLOB, BLOB, MEDIUMBLOB or LONGBLOB at the network protocol level).

    - Fixed BUG#5022 - ResultSet should release Field[] instance in .close().

    - Fixed BUG#5069 -- ResultSet.getMetaData() should not return
      incorrectly-initialized metadata if the result set has been closed, but
      should instead throw a SQLException. Also fixed for getRow() and
      getWarnings() and traversal methods by calling checkClosed() before
      operating on instance-level fields that are nullified during .close().

    - Parse new timezone variables from 4.1.x servers.

    - Use _binary introducer for PreparedStatement.setBytes() and
      set*Stream() when connected to MySQL-4.1.x or newer to avoid
      misinterpretation during character conversion.

05-28-04 - Version 3.0.14-production

    - Fixed URL parsing error

05-27-04 - Version 3.0.13-production

    - Fixed BUG#3848 - Using a MySQLDatasource without server name fails

    - Fixed BUG#3920 - "No Database Selected" when using
    MysqlConnectionPoolDataSource.

    - Fixed BUG#3873 - PreparedStatement.getGeneratedKeys() method returns only
    1 result for batched insertions

05-18-04 - Version 3.0.12-production

    - Add unsigned attribute to DatabaseMetaData.getColumns() output
    in the TYPE_NAME column.

    - Added 'failOverReadOnly' property, to allow end-user to configure
    state of connection (read-only/writable) when failed over.

    - Backported 'change user' and 'reset server state' functionality
      from 3.1 branch, to allow clients of MysqlConnectionPoolDataSource
      to reset server state on getConnection() on a pooled connection.

    - Don't escape SJIS/GBK/BIG5 when using MySQL-4.1 or newer.

    - Allow 'url' parameter for MysqlDataSource and MysqlConnectionPool
      DataSource so that passing of other properties is possible from
      inside appservers.

    - Map duplicate key and foreign key errors to SQLState of
      '23000'.

    - Backport documentation tooling from 3.1 branch.

    - Return creating statement for ResultSets created by
      getGeneratedKeys() (BUG#2957)

    - Allow java.util.Date to be sent in as parameter to
      PreparedStatement.setObject(), converting it to a Timestamp
      to maintain full precision (BUG#3103).

    - Don't truncate BLOBs/CLOBs when using setBytes() and/or
      setBinary/CharacterStream() (BUG#2670).

    - Dynamically configure character set mappings for field-level
      character sets on MySQL-4.1.0 and newer using 'SHOW COLLATION'
      when connecting.

    - Map 'binary' character set to 'US-ASCII' to support DATETIME
      charset recognition for servers >= 4.1.2

    - Use 'SET character_set_results" during initialization to allow any
      charset to be returned to the driver for result sets.

    - Use charsetnr returned during connect to encode queries before
      issuing 'SET NAMES' on MySQL >= 4.1.0.

    - Add helper methods to ResultSetMetaData (getColumnCharacterEncoding()
      and getColumnCharacterSet()) to allow end-users to see what charset
      the driver thinks it should be using for the column.

    - Only set character_set_results for MySQL >= 4.1.0.

    - Fixed BUG#3511, StringUtils.escapeSJISByteStream() not covering all
      eastern double-byte charsets correctly.

    - Renamed StringUtils.escapeSJISByteStream() to more appropriate
      escapeEasternUnicodeByteStream().

    - Fixed BUG#3554 - Not specifying database in URL caused MalformedURL
      exception.

    - Auto-convert MySQL encoding names to Java encoding names if used
      for characterEncoding property.

    - Added encoding names that are recognized on some JVMs to fix case
      where they were reverse-mapped to MySQL encoding names incorrectly.

    - Use junit.textui.TestRunner for all unit tests (to allow them to be
      run from the command line outside of Ant or Eclipse).

    - Fixed BUG#3557 - UpdatableResultSet not picking up default values
      for moveToInsertRow().

    - Fixed BUG#3570 - inconsistent reporting of column type. The server
      still doesn't return all types for *BLOBs *TEXT correctly, so the
      driver won't return those correctly.

    - Fixed BUG#3520 -- DBMD.getSQLStateType() returns incorrect value.

    - Fixed regression in PreparedStatement.setString() and eastern character
      encodings.

    - Made StringRegressionTest 4.1-unicode aware.

02-19-04 - Version 3.0.11-stable

    - Trigger a 'SET NAMES utf8' when encoding is forced to 'utf8' _or_
    'utf-8' via the 'characterEncoding' property. Previously, only the
    Java-style encoding name of 'utf-8' would trigger this.

    - AutoReconnect time was growing faster than exponentially (BUG#2447).

    - Fixed failover always going to last host in list (BUG#2578)

    - Added 'useUnbufferedInput' parameter, and now use it by default
      (due to JVM issue
      http://developer.java.sun.com/developer/bugParade/bugs/4401235.html)

    - Detect 'on/off' or '1','2','3' form of lower_case_table_names on
      server.

    - Return 'java.lang.Integer' for TINYINT and SMALLINT types from
      ResultSetMetaData.getColumnClassName() (fix for BUG#2852).

    - Return 'java.lang.Double' for FLOAT type from ResultSetMetaData.
      getColumnClassName() (fix for BUG#2855).

    - Return '[B' instead of java.lang.Object for BINARY, VARBINARY and
      LONGVARBINARY types from ResultSetMetaData.getColumnClassName()
      (JDBC compliance).

    - Issue connection events on all instances created from a
      ConnectionPoolDataSource.

01-13-04 - Version 3.0.10-stable

    - Don't count quoted id's when inside a 'string' in PreparedStatement
      parsing (fix for BUG#1511).

    - 'Friendlier' exception message for PacketTooLargeException
       (BUG#1534).

    - Backported fix for aliased tables and UpdatableResultSets in
      checkUpdatability() method from 3.1 branch.

    - Fix for ArrayIndexOutOfBounds exception when using Statement.setMaxRows()
      (BUG#1695).

    - Fixed BUG#1576, dealing with large blobs and split packets not being
      read correctly.

    - Fixed regression of Statement.getGeneratedKeys() and REPLACE statements.

    - Fixed BUG#1630, subsequent call to ResultSet.updateFoo() causes NPE if
      result set is not updatable.

    - Fix for 4.1.1-style auth with no password.

    - Fix for BUG#1731, Foreign Keys column sequence is not consistent in
      DatabaseMetaData.getImported/Exported/CrossReference().

    - Fix for BUG#1775 - DatabaseMetaData.getSystemFunction() returning
      bad function 'VResultsSion'.

    - Fix for BUG#1592 -- cross-database updatable result sets
      are not checked for updatability correctly.

    - DatabaseMetaData.getColumns() should return Types.LONGVARCHAR for
      MySQL LONGTEXT type.

    - ResultSet.getObject() on TINYINT and SMALLINT columns should return
      Java type 'Integer' (BUG#1913)

    - Added 'alwaysClearStream' connection property, which causes the driver
      to always empty any remaining data on the input stream before
      each query.

    - Added more descriptive error message 'Server Configuration Denies
      Access to DataSource', as well as retrieval of message from server.

    - Autoreconnect code didn't set catalog upon reconnect if it had been
      changed.

    - Implement ResultSet.updateClob().

    - ResultSetMetaData.isCaseSensitive() returned wrong value for CHAR/VARCHAR
      columns.

    - Fix for BUG#1933 -- Connection property "maxRows" not honored.

    - Fix for BUG#1925 -- Statements being created too many times in
      DBMD.extractForeignKeyFromCreateTable().

    - Fix for BUG#1914 -- Support escape sequence {fn convert ... }

    - Fix for BUG#1958 -- ArrayIndexOutOfBounds when parameter number ==
      number of parameters + 1.

    - Fix for BUG#2006 -- ResultSet.findColumn() should use first matching
      column name when there are duplicate column names in SELECT query
      (JDBC-compliance).

    - Removed static synchronization bottleneck from
      PreparedStatement.setTimestamp().

    - Removed static synchronization bottleneck from instance factory
      method of SingleByteCharsetConverter.

    - Enable caching of the parsing stage of prepared statements via
      the 'cachePrepStmts', 'prepStmtCacheSize' and 'prepStmtCacheSqlLimit'
      properties (disabled by default).

    - Speed up parsing of PreparedStatements, try to use one-pass whenever
      possible.

    - Fixed security exception when used in Applets (applets can't
      read the system property 'file.encoding' which is needed
      for LOAD DATA LOCAL INFILE).

    - Use constants for SQLStates.

    - Map charset 'ko18_ru' to 'ko18r' when connected to MySQL-4.1.0 or
      newer.

    - Ensure that Buffer.writeString() saves room for the \0.

    - Fixed exception 'Unknown character set 'danish' on connect w/ JDK-1.4.0

    - Fixed mappings in SQLError to report deadlocks with SQLStates of '41000'.

    - 'maxRows' property would affect internal statements, so check it for all
      statement creation internal to the driver, and set to 0 when it is not.

10-07-03 - Version 3.0.9-stable

    - Faster date handling code in ResultSet and PreparedStatement (no longer
      uses Date methods that synchronize on static calendars).

    - Fixed test for end of buffer in Buffer.readString().

    - Fixed ResultSet.previous() behavior to move current
      position to before result set when on first row
      of result set (bugs.mysql.com BUG#496)

    - Fixed Statement and PreparedStatement issuing bogus queries
      when setMaxRows() had been used and a LIMIT clause was present
      in the query.

    - Fixed BUG#661 - refreshRow didn't work when primary key values
      contained values that needed to be escaped (they ended up being
      doubly-escaped).

    - Support InnoDB contraint names when extracting foreign key info
      in DatabaseMetaData BUG#517 and BUG#664
      (impl. ideas from Parwinder Sekhon)

    - Backported 4.1 protocol changes from 3.1 branch (server-side SQL
      states, new field info, larger client capability flags,
      connect-with-database, etc).

    - Fix UpdatableResultSet to return values for getXXX() when on
      insert row (BUG#675).

    - The insertRow in an UpdatableResultSet is now loaded with
      the default column values when moveToInsertRow() is called
      (BUG#688)

    - DatabaseMetaData.getColumns() wasn't returning NULL for
      default values that are specified as NULL.

    - Change default statement type/concurrency to TYPE_FORWARD_ONLY
      and CONCUR_READ_ONLY (spec compliance).

    - Don't try and reset isolation level on reconnect if MySQL doesn't
      support them.

    - Don't wrap SQLExceptions in RowDataDynamic.

    - Don't change timestamp TZ twice if useTimezone==true (BUG#774)

    - Fixed regression in large split-packet handling (BUG#848).

    - Better diagnostic error messages in exceptions for 'streaming'
      result sets.

    - Issue exception on ResultSet.getXXX() on empty result set (wasn't
      caught in some cases).

    - Don't hide messages from exceptions thrown in I/O layers.

    - Don't fire connection closed events when closing pooled connections, or
      on PooledConnection.getConnection() with already open connections (BUG#884).

    - Clip +/- INF (to smallest and largest representative values for the type in
      MySQL) and NaN (to 0) for setDouble/setFloat(), and issue a warning on the
      statement when the server does not support +/- INF or NaN.

    - Fix for BUG#879, double-escaping of '\' when charset is SJIS or GBK and '\'
      appears in non-escaped input.

    - When emptying input stream of unused rows for 'streaming' result sets,
      have the current thread yield() every 100 rows in order to not monopolize
      CPU time.

    - Fixed BUG#1099, DatabaseMetaData.getColumns() getting confused about the
      keyword 'set' in character columns.

    - Fixed deadlock issue with Statement.setMaxRows().

    - Fixed CLOB.truncate(), BUG#1130

    - Optimized CLOB.setChracterStream(), BUG#1131

    - Made databaseName, portNumber and serverName optional parameters
      for MysqlDataSourceFactory (BUG#1246)

    - Fix for BUG#1247 -- ResultSet.get/setString mashing char 127

    - Backported auth. changes for 4.1.1 and newer from 3.1 branch.

    - Added com.mysql.jdbc.util.BaseBugReport to help creation of testcases
      for bug reports.

    - Added property to 'clobber' streaming results, by setting the
      'clobberStreamingResults' property to 'true' (the default is 'false').
      This will cause a 'streaming' ResultSet to be automatically
      closed, and any oustanding data still streaming from the server to
      be discarded if another query is executed before all the data has been
      read from the server.

05-23-03 - Version 3.0.8-stable

    - Allow bogus URLs in Driver.getPropertyInfo().

    - Return list of generated keys when using multi-value INSERTS
      with Statement.getGeneratedKeys().

    - Use JVM charset with filenames and 'LOAD DATA [LOCAL] INFILE'

    - Fix infinite loop with Connection.cleanup().

    - Changed Ant target 'compile-core' to 'compile-driver', and
      made testsuite compilation a separate target.

    - Fixed result set not getting set for Statement.executeUpdate(),
      which affected getGeneratedKeys() and getUpdateCount() in
      some cases.

    - Unicode character 0xFFFF in a string would cause the driver to
      throw an ArrayOutOfBoundsException (Bug #378)

    - Return correct amount of generated keys when using 'REPLACE'
      statements.

    - Fix problem detecting server character set in some cases.

    - Fix row data decoding error when using _very_ large packets.

    - Optimized row data decoding.

    - Issue exception when operating on an already-closed
      prepared statement.

    - Fixed SJIS encoding bug, thanks to Naoto Sato.

    - Optimized usage of EscapeProcessor.

    - Allow multiple calls to Statement.close()

04-08-03 - Version 3.0.7-stable

    - Fixed MysqlPooledConnection.close() calling wrong event type.

    - Fixed StringIndexOutOfBoundsException in PreparedStatement.
      setClob().

    - 4.1 Column Metadata fixes

    - Remove synchronization from Driver.connect() and
      Driver.acceptsUrl().

    - IOExceptions during a transaction now cause the Connection to
      be closed.

    - Fixed missing conversion for 'YEAR' type in ResultSetMetaData.
      getColumnTypeName().

    - Don't pick up indexes that start with 'pri' as primary keys
      for DBMD.getPrimaryKeys().

    - Throw SQLExceptions when trying to do operations on a forcefully
      closed Connection (i.e. when a communication link failure occurs).

    - You can now toggle profiling on/off using
      Connection.setProfileSql(boolean).

    - Fixed charset issues with database metadata (charset was not
      getting set correctly).

    - Updatable ResultSets can now be created for aliased tables/columns
      when connected to MySQL-4.1 or newer.

    - Fixed 'LOAD DATA LOCAL INFILE' bug when file > max_allowed_packet.

    - Fixed escaping of 0x5c ('\') character for GBK and Big5 charsets.

    - Fixed ResultSet.getTimestamp() when underlying field is of type DATE.

    - Ensure that packet size from alignPacketSize() does not
      exceed MAX_ALLOWED_PACKET (JVM bug)

    - Don't reset Connection.isReadOnly() when autoReconnecting.

02-18-03 - Version 3.0.6-stable

    - Fixed ResultSetMetaData to return "" when catalog not known.
      Fixes NullPointerExceptions with Sun's CachedRowSet.

    - Fixed DBMD.getTypeInfo() and DBMD.getColumns() returning
      different value for precision in TEXT/BLOB types.

    - Allow ignoring of warning for 'non transactional tables' during
      rollback (compliance/usability) by setting 'ignoreNonTxTables'
      property to 'true'.

    - Fixed SQLExceptions getting swallowed on initial connect.

    - Fixed Statement.setMaxRows() to stop sending 'LIMIT' type queries
      when not needed (performance)

    - Clean up Statement query/method mismatch tests (i.e. INSERT not
      allowed with .executeQuery()).

    - More checks added in ResultSet traversal method to catch
      when in closed state.

    - Fixed ResultSetMetaData.isWritable() to return correct value.

    - Add 'window' of different NULL sorting behavior to
      DBMD.nullsAreSortedAtStart (4.0.2 to 4.0.10, true, otherwise,
      no).

    - Implemented Blob.setBytes(). You still need to pass the
      resultant Blob back into an updatable ResultSet or
      PreparedStatement to persist the changes, as MySQL does
      not support 'locators'.

    - Backported 4.1 charset field info changes from Connector/J 3.1

01-22-03 - Version 3.0.5-gamma

    - Fixed Buffer.fastSkipLenString() causing ArrayIndexOutOfBounds
      exceptions with some queries when unpacking fields.

    - Implemented an empty TypeMap for Connection.getTypeMap() so that
      some third-party apps work with MySQL (IBM WebSphere 5.0 Connection
      pool).

    - Added missing LONGTEXT type to DBMD.getColumns().

    - Retrieve TX_ISOLATION from database for
      Connection.getTransactionIsolation() when the MySQL version
      supports it, instead of an instance variable.

    - Quote table names in DatabaseMetaData.getColumns(),
      getPrimaryKeys(), getIndexInfo(), getBestRowIdentifier()

    - Greatly reduce memory required for setBinaryStream() in
      PreparedStatements.

    - Fixed ResultSet.isBeforeFirst() for empty result sets.

    - Added update options for foreign key metadata.


01-06-03 - Version 3.0.4-gamma

    - Added quoted identifiers to database names for
      Connection.setCatalog.

    - Added support for quoted identifiers in PreparedStatement
      parser.

    - Streamlined character conversion and byte[] handling in
      PreparedStatements for setByte().

    - Reduce memory footprint of PreparedStatements by sharing
      outbound packet with MysqlIO.

    - Added 'strictUpdates' property to allow control of amount
      of checking for 'correctness' of updatable result sets. Set this
      to 'false' if you want faster updatable result sets and you know
      that you create them from SELECTs on tables with primary keys and
      that you have selected all primary keys in your query.

    - Added support for 4.0.8-style large packets.

    - Fixed PreparedStatement.executeBatch() parameter overwriting.

12-17-02 - Version 3.0.3-dev

    - Changed charsToByte in SingleByteCharConverter to be non-static

    - Changed SingleByteCharConverter to use lazy initialization of each
      converter.

    - Fixed charset handling in Fields.java

    - Implemented Connection.nativeSQL()

    - More robust escape tokenizer -- recognize '--' comments, and allow
      nested escape sequences (see testsuite.EscapeProcessingTest)

    - DBMD.getImported/ExportedKeys() now handles multiple foreign keys
      per table.

    - Fixed ResultSetMetaData.getPrecision() returning incorrect values
      for some floating point types.

    - Fixed ResultSetMetaData.getColumnTypeName() returning BLOB for
      TEXT and TEXT for BLOB types.

    - Fixed Buffer.isLastDataPacket() for 4.1 and newer servers.

    - Added CLIENT_LONG_FLAG to be able to get more column flags
      (isAutoIncrement() being the most important)

    - Because of above, implemented ResultSetMetaData.isAutoIncrement()
      to use Field.isAutoIncrement().

    - Honor 'lower_case_table_names' when enabled in the server when
      doing table name comparisons in DatabaseMetaData methods.

    - Some MySQL-4.1 protocol support (extended field info from selects)

    - Use non-aliased table/column names and database names to fullly
      qualify tables and columns in UpdatableResultSet (requires
      MySQL-4.1 or newer)

    - Allow user to alter behavior of Statement/
      PreparedStatement.executeBatch() via 'continueBatchOnError' property
      (defaults to 'true').

    - Check for connection closed in more Connection methods
      (createStatement, prepareStatement, setTransactionIsolation,
      setAutoCommit).

    - More robust implementation of updatable result sets. Checks that
      _all_ primary keys of the table have been selected.

    - 'LOAD DATA LOCAL INFILE ...' now works, if your server is configured
      to allow it. Can be turned off with the 'allowLoadLocalInfile'
      property (see the README).

    - Substitute '?' for unknown character conversions in single-byte
      character sets instead of '\0'.

    - NamedPipeSocketFactory now works (only intended for Windows), see
      README for instructions.

11-08-02 - Version 3.0.2-dev

    - Fixed issue with updatable result sets and PreparedStatements not
      working

    - Fixed ResultSet.setFetchDirection(FETCH_UNKNOWN)

    - Fixed issue when calling Statement.setFetchSize() when using
      arbitrary values

    - Fixed incorrect conversion in ResultSet.getLong()

    - Implemented ResultSet.updateBlob().

    - Removed duplicate code from UpdatableResultSet (it can be inherited
      from ResultSet, the extra code for each method to handle updatability
      I thought might someday be necessary has not been needed).

    - Fixed "UnsupportedEncodingException" thrown when "forcing" a
      character encoding via properties.

    - Fixed various non-ASCII character encoding issues.

    - Added driver property 'useHostsInPrivileges'. Defaults to true.
      Affects whether or not '@hostname' will be used in
      DBMD.getColumn/TablePrivileges.

    - All DBMD result set columns describing schemas now return NULL
      to be more compliant with the behavior of other JDBC drivers
      for other databases (MySQL does not support schemas).

    - Added SSL support. See README for information on how to use it.

    - Properly restore connection properties when autoReconnecting
      or failing-over, including autoCommit state, and isolation level.

    - Use 'SHOW CREATE TABLE' when possible for determining foreign key
      information for DatabaseMetaData...also allows cascade options for
      DELETE information to be returned

    - Escape 0x5c character in strings for the SJIS charset.

    - Fixed start position off-by-1 error in Clob.getSubString()

    - Implemented Clob.truncate()

    - Implemented Clob.setString()

    - Implemented Clob.setAsciiStream()

    - Implemented Clob.setCharacterStream()

    - Added com.mysql.jdbc.MiniAdmin class, which allows you to send
      'shutdown' command to MySQL server...Intended to be used when 'embedding'
      Java and MySQL server together in an end-user application.

    - Added 'connectTimeout' parameter that allows users of JDK-1.4 and newer
      to specify a maxium time to wait to establish a connection.

    - Failover and autoReconnect only work when the connection is in a
      autoCommit(false) state, in order to stay transaction safe

    - Added 'queriesBeforeRetryMaster' property that specifies how many
      queries to issue when failed over before attempting to reconnect
      to the master (defaults to 50)

    - Fixed DBMD.supportsResultSetConcurrency() so that it returns true
      for ResultSet.TYPE_SCROLL_INSENSITIVE and ResultSet.CONCUR_READ_ONLY or
      ResultSet.CONCUR_UPDATABLE

    - Fixed ResultSet.isLast() for empty result sets (should return false).

    - PreparedStatement now honors stream lengths in setBinary/Ascii/Character
      Stream() unless you set the connection property
      'useStreamLengthsInPrepStmts' to 'false'.

    - Removed some not-needed temporary object creation by using Strings
      smarter in EscapeProcessor, Connection and DatabaseMetaData classes.

09-21-02 - Version 3.0.1-dev

    - Fixed ResultSet.getRow() off-by-one bug.

    - Fixed RowDataStatic.getAt() off-by-one bug.

    - Added limited Clob functionality (ResultSet.getClob(),
      PreparedStatemtent.setClob(),
      PreparedStatement.setObject(Clob).

    - Added socketTimeout parameter to URL.

    - Connection.isClosed() no longer "pings" the server.

    - Connection.close() issues rollback() when getAutoCommit() == false

    - Added "paranoid" parameter...sanitizes error messages removing
      "sensitive" information from them (i.e. hostnames, ports,
      usernames, etc.), as well as clearing "sensitive" data structures
      when possible.

    - Fixed ResultSetMetaData.isSigned() for TINYINT and BIGINT.

    - Charsets now automatically detected. Optimized code for single-byte
      character set conversion.

    - Implemented ResultSet.getCharacterStream()

    - Added "LOCAL TEMPORARY" to table types in DatabaseMetaData.getTableTypes()

    - Massive code clean-up to follow Java coding conventions (the time had come)


07-31-02 - Version 3.0.0-dev

    - !!! LICENSE CHANGE !!! The driver is now GPL. If you need
      non-GPL licenses, please contact me <[email protected]>

    - JDBC-3.0 functionality including
      Statement/PreparedStatement.getGeneratedKeys() and
      ResultSet.getURL()

    - Performance enchancements - driver is now 50-100% faster
      in most situations, and creates fewer temporary objects

    - Repackaging...new driver name is "com.mysql.jdbc.Driver",
      old name still works, though (the driver is now provided
      by MySQL-AB)

    - Better checking for closed connections in Statement
      and PreparedStatement.

    - Support for streaming (row-by-row) result sets (see README)
      Thanks to Doron.

    - Support for large packets (new addition to MySQL-4.0 protocol),
      see README for more information.

    - JDBC Compliance -- Passes all tests besides stored procedure tests


    - Fix and sort primary key names in DBMetaData (SF bugs 582086 and 582086)

    - Float types now reported as java.sql.Types.FLOAT (SF bug 579573)

    - ResultSet.getTimestamp() now works for DATE types (SF bug 559134)

    - ResultSet.getDate/Time/Timestamp now recognizes all forms of invalid
      values that have been set to all zeroes by MySQL (SF bug 586058)

    - Testsuite now uses Junit (which you can get from www.junit.org)

    - The driver now only works with JDK-1.2 or newer.

    - Added multi-host failover support (see README)

    - General source-code cleanup.

    - Overall speed improvements via controlling transient object
      creation in MysqlIO class when reading packets

    - Performance improvements in  string handling and field
      metadata creation (lazily instantiated) contributed by
      Alex Twisleton-Wykeham-Fiennes


05-16-02 - Version 2.0.14

    - More code cleanup

    - PreparedStatement now releases resources on .close() (SF bug 553268)

    - Quoted identifiers not used if server version does not support them. Also,
      if server started with --ansi or --sql-mode=ANSI_QUOTES then '"' will be
      used as an identifier quote, otherwise '`' will be used.

    - ResultSet.getDouble() now uses code built into JDK to be more precise (but slower)

    - LogicalHandle.isClosed() calls through to physical connection

    - Added SQL profiling (to STDERR). Set "profileSql=true" in your JDBC url.
      See README for more information.

    - Fixed typo for relaxAutoCommit parameter.

04-24-02 - Version 2.0.13

    - More code cleanup.

    - Fixed unicode chars being read incorrectly (SF bug 541088)

    - Faster blob escaping for PrepStmt

    - Added set/getPortNumber() to DataSource(s) (SF bug 548167)

    - Added setURL() to MySQLXADataSource (SF bug 546019)

    - PreparedStatement.toString() fixed (SF bug 534026)

    - ResultSetMetaData.getColumnClassName() now implemented

    - Rudimentary version of Statement.getGeneratedKeys() from JDBC-3.0
      now implemented (you need to be using JDK-1.4 for this to work, I
      believe)

    - DBMetaData.getIndexInfo() - bad PAGES fixed (SF BUG 542201)

04-07-02 - Version 2.0.12

    - General code cleanup.

    - Added getIdleFor() method to Connection and MysqlLogicalHandle.

    - Relaxed synchronization in all classes, should fix 520615 and 520393.

    - Added getTable/ColumnPrivileges() to DBMD (fixes 484502).

    - Added new types to getTypeInfo(), fixed existing types thanks to
      Al Davis and Kid Kalanon.

    - Added support for BIT types (51870) to PreparedStatement.

    - Fixed getRow() bug (527165) in ResultSet

    - Fixes for ResultSet updatability in PreparedStatement.
    - Fixed timezone off by 1-hour bug in PreparedStatement (538286, 528785).

    - ResultSet: Fixed updatability (values being set to null
      if not updated).

    - DataSources - fixed setUrl bug (511614, 525565),
      wrong datasource class name (532816, 528767)

    - Added identifier quoting to all DatabaseMetaData methods
      that need them (should fix 518108)

    - Added support for YEAR type (533556)

    - ResultSet.insertRow() should now detect auto_increment fields
      in most cases and use that value in the new row. This detection
      will not work in multi-valued keys, however, due to the fact that
      the MySQL protocol does not return this information.

    - ResultSet.refreshRow() implemented.

    - Fixed testsuite.Traversal afterLast() bug, thanks to Igor Lastric.

01-27-02 - Version 2.0.11

    - Fixed missing DELETE_RULE value in
      DBMD.getImported/ExportedKeys() and getCrossReference().

    - Full synchronization of Statement.java.

    - More changes to fix "Unexpected end of input stream"
      errors when reading BLOBs. This should be the last fix.

01-24-02 - Version 2.0.10

     - Fixed spurious "Unexpected end of input stream" errors in
       MysqlIO (bug 507456).

     - Fixed null-pointer-exceptions when using
       MysqlConnectionPoolDataSource with Websphere 4 (bug 505839).

01-13-02 - Version 2.0.9

     - Ant build was corrupting included jar files, fixed
       (bug 487669).

     - Fixed extra memory allocation in MysqlIO.readPacket()
       (bug 488663).

     - Implementation of DatabaseMetaData.getExported/ImportedKeys() and
       getCrossReference().

     - Full synchronization on methods modifying instance and class-shared
       references, driver should be entirely thread-safe now (please
       let me know if you have problems)

     - DataSource implementations moved to org.gjt.mm.mysql.jdbc2.optional
       package, and (initial) implementations of PooledConnectionDataSource
       and XADataSource are in place (thanks to Todd Wolff for the
       implementation and testing of PooledConnectionDataSource with
       IBM WebSphere 4).

     - Added detection of network connection being closed when reading packets
       (thanks to Todd Lizambri).

     - Fixed quoting error with escape processor (bug 486265).

     - Report batch update support through DatabaseMetaData (bug 495101).

     - Fixed off-by-one-hour error in PreparedStatement.setTimestamp()
       (bug 491577).

     - Removed concatenation support from driver (the '||' operator),
       as older versions of VisualAge seem to be the only thing that
       use it, and it conflicts with the logical '||' operator. You will
       need to start mysqld with the "--ansi" flag to use the '||'
       operator as concatenation (bug 491680)

     - Fixed casting bug in PreparedStatement (bug 488663).

11-25-01 - Version 2.0.8

     - Batch updates now supported (thanks to some inspiration
       from Daniel Rall).

     - XADataSource/ConnectionPoolDataSource code (experimental)

     - PreparedStatement.setAnyNumericType() now handles positive
       exponents correctly (adds "+" so MySQL can understand it).

     - DatabaseMetaData.getPrimaryKeys() and getBestRowIdentifier()
       are now more robust in identifying primary keys (matches
       regardless of case or abbreviation/full spelling of Primary Key
       in Key_type column).

10-24-01 - Version 2.0.7

     - PreparedStatement.setCharacterStream() now implemented

     - Fixed dangling socket problem when in high availability
       (autoReconnect=true) mode, and finalizer for Connection will
       close any dangling sockets on GC.

     - Fixed ResultSetMetaData.getPrecision() returning one
       less than actual on newer versions of MySQL.

     - ResultSet.getBlob() now returns null if column value
       was null.

     - Character sets read from database if useUnicode=true
       and characterEncoding is not set. (thanks to
       Dmitry Vereshchagin)

     - Initial transaction isolation level read from
       database (if avaialable) (thanks to Dmitry Vereshchagin)

     - Fixed DatabaseMetaData.supportsTransactions(), and
       supportsTransactionIsolationLevel() and getTypeInfo()
       SQL_DATETIME_SUB and SQL_DATA_TYPE fields not being
       readable.

     - Fixed PreparedStatement generating SQL that would end
       up with syntax errors for some queries.

     - Fixed ResultSet.isAfterLast() always returning false.

     - Fixed timezone issue in PreparedStatement.setTimestamp()
       (thanks to Erik Olofsson)

     - Captialize type names when "captializeTypeNames=true"
       is passed in URL or properties (for WebObjects, thanks
       to Anjo Krank)

     - Updatable result sets now correctly handle NULL
       values in fields.

     - PreparedStatement.setDouble() now uses full-precision
       doubles (reverting a fix made earlier to truncate them).

     - PreparedStatement.setBoolean() will use 1/0 for values
       if your MySQL Version >= 3.21.23.

06-16-01 - Version 2.0.6

     - Fixed PreparedStatement parameter checking

     - Fixed case-sensitive column names in ResultSet.java

06-13-01 - Version 2.0.5

     - Fixed ResultSet.getBlob() ArrayIndex out-of-bounds

     - Fixed ResultSetMetaData.getColumnTypeName for TEXT/BLOB

     - Fixed ArrayIndexOutOfBounds when sending large BLOB queries
       (Max size packet was not being set)

     - Added ISOLATION level support to Connection.setIsolationLevel()

     - Fixed NPE on PreparedStatement.executeUpdate() when all columns
       have not been set.

     - Fixed data parsing of TIMESTAMPs with 2-digit years

     - Added Byte to PreparedStatement.setObject()

     - ResultSet.getBoolean() now recognizes '-1' as 'true'

     - ResultSet has +/-Inf/inf support

     - ResultSet.insertRow() works now, even if not all columns are
       set (they will be set to "NULL")

     - DataBaseMetaData.getCrossReference() no longer ArrayIndexOOB

     - getObject() on ResultSet correctly does TINYINT->Byte and
       SMALLINT->Short

12-03-00 - Version 2.0.3

     - Implemented getBigDecimal() without scale component
       for JDBC2.

     - Fixed composite key problem with updateable result sets.

     - Added detection of -/+INF for doubles.

     - Faster ASCII string operations.

     - Fixed incorrect detection of MAX_ALLOWED_PACKET, so sending
       large blobs should work now.

     - Fixed off-by-one error in java.sql.Blob implementation code.

     - Added "ultraDevHack" URL parameter, set to "true" to allow
       (broken) Macromedia UltraDev to use the driver.

04-06-00 - Version 2.0.1

     - Fixed RSMD.isWritable() returning wrong value.
       Thanks to Moritz Maass.

     - Cleaned up exception handling when driver connects

     - Columns that are of type TEXT now return as Strings
       when you use getObject()

     - DatabaseMetaData.getPrimaryKeys() now works correctly wrt
       to key_seq. Thanks to Brian Slesinsky.

     - No escape processing is done on PreparedStatements anymore
       per JDBC spec.

     - Fixed many JDBC-2.0 traversal, positioning bugs, especially
       wrt to empty result sets. Thanks to Ron Smits, Nick Brook,
       Cessar Garcia and Carlos Martinez.

     - Fixed some issues with updatability support in ResultSet when
       using multiple primary keys.

02-21-00 - Version 2.0pre5

     - Fixed Bad Handshake problem.

01-10-00 - Version 2.0pre4

     - Fixes to ResultSet for insertRow() - Thanks to
       Cesar Garcia

     - Fix to Driver to recognize JDBC-2.0 by loading a JDBC-2.0
       class, instead of relying on JDK version numbers. Thanks
       to John Baker.

     - Fixed ResultSet to return correct row numbers

     - Statement.getUpdateCount() now returns rows matched,
       instead of rows actually updated, which is more SQL-92
       like.

10-29-99

     - Statement/PreparedStatement.getMoreResults() bug fixed.
       Thanks to Noel J. Bergman.

     - Added Short as a type to PreparedStatement.setObject().
       Thanks to Jeff Crowder

     - Driver now automagically configures maximum/preferred packet
       sizes by querying server.

     - Autoreconnect code uses fast ping command if server supports
       it.

     - Fixed various bugs wrt. to packet sizing when reading from
       the server and when alloc'ing to write to the server.

08-17-99 - Version 2.0pre

     - Now compiles under JDK-1.2. The driver supports both JDK-1.1
       and JDK-1.2 at the same time through a core set of classes.
       The driver will load the appropriate interface classes at
       runtime by figuring out which JVM version you are using.

     - Fixes for result sets with all nulls in the first row.
       (Pointed out by Tim Endres)

     - Fixes to column numbers in SQLExceptions in ResultSet
       (Thanks to Blas Rodriguez Somoza)

     - The database no longer needs to specified to connect.
       (Thanks to Christian Motschke)

07-04-99 - Version 1.2b

     - Better Documentation (in progress), in doc/mm.doc/book1.html

     - DBMD now allows null for a column name pattern (not in
       spec), which it changes to '%'.

     - DBMD now has correct types/lengths for getXXX().

     - ResultSet.getDate(), getTime(), and getTimestamp() fixes.
       (contributed by Alan Wilken)

     - EscapeProcessor now handles \{ \} and { or } inside quotes
       correctly. (thanks to Alik for some ideas on how to fix it)

     - Fixes to properties handling in Connection.
       (contributed by Juho Tikkala)

     - ResultSet.getObject() now returns null for NULL columns
       in the table, rather than bombing out.
       (thanks to Ben Grosman)

     - ResultSet.getObject() now returns Strings for types
       from MySQL that it doesn't know about. (Suggested by
       Chris Perdue)

     - Removed DataInput/Output streams, not needed, 1/2 number
       of method calls per IO operation.

     - Use default character encoding if one is not specified. This
       is a work-around for broken JVMs, because according to spec,
       EVERY JVM must support "ISO8859_1", but they don't.

     - Fixed Connection to use the platform character encoding
       instead of "ISO8859_1" if one isn't explicitly set. This
       fixes problems people were having loading the character-
       converter classes that didn't always exist (JVM bug).
       (thanks to Fritz Elfert for pointing out this problem)

     - Changed MysqlIO to re-use packets where possible to reduce
       memory usage.

     - Fixed escape-processor bugs pertaining to {} inside
       quotes.

04-14-99 - Version 1.2a

     - Fixed character-set support for non-Javasoft JVMs
       (thanks to many people for pointing it out)

     - Fixed ResultSet.getBoolean() to recognize 'y' & 'n'
       as well as '1' & '0' as boolean flags.
       (thanks to Tim Pizey)

     - Fixed ResultSet.getTimestamp() to give better performance.
       (thanks to Richard Swift)

     - Fixed getByte() for numeric types.
       (thanks to Ray Bellis)

     - Fixed DatabaseMetaData.getTypeInfo() for DATE type.
       (thanks to Paul Johnston)

     - Fixed EscapeProcessor for "fn" calls.
       (thanks to Piyush Shah at locomotive.org)

     - Fixed EscapeProcessor to not do extraneous work if there
       are no escape codes.
       (thanks to Ryan Gustafson)

     - Fixed Driver to parse URLs of the form "jdbc:mysql://host:port"
       (thanks to Richard Lobb)

03-24-99 - Version 1.1i

     - Fixed Timestamps for PreparedStatements

     - Fixed null pointer exceptions in RSMD and RS

     - Re-compiled with jikes for valid class files (thanks ms!)

03-08-99 - Version 1.1h

     - Fixed escape processor to deal with un-matched { and }
       (thanks to Craig Coles)

     - Fixed escape processor to create more portable (between
       DATETIME and TIMESTAMP types) representations so that
       it will work with BETWEEN clauses.
       (thanks to Craig Longman)

     - MysqlIO.quit() now closes the socket connection. Before,
       after many failed connections some OS's would run out
       of file descriptors. (thanks to Michael Brinkman)

     - Fixed NullPointerException in Driver.getPropertyInfo.
       (thanks to Dave Potts)

     - Fixes to MysqlDefs to allow all *text fields to be
       retrieved as Strings.
       (thanks to Chris at Leverage)

     - Fixed setDouble in PreparedStatement for large numbers
       to avoid sending scientific notation to the database.
       (thanks to J.S. Ferguson)

     - Fixed getScale() and getPrecision() in RSMD.
       (contrib'd by James Klicman)

     - Fixed getObject() when field was DECIMAL or NUMERIC
       (thanks to Bert Hobbs)

     - DBMD.getTables() bombed when passed a null table-name
       pattern. Fixed. (thanks to Richard Lobb)

     - Added check for "client not authorized" errors during
       connect. (thanks to Hannes Wallnoefer)

02-19-99 - Version 1.1g

     - Result set rows are now byte arrays. Blobs and Unicode
       work bidriectonally now. The useUnicode and encoding
       options are implemented now.

     - Fixes to PreparedStatement to send binary set by
       setXXXStream to be sent un-touched to the MySQL server.

     - Fixes to getDriverPropertyInfo().

12-31-98 - Version 1.1f

     - Changed all ResultSet fields to Strings, this should allow
       Unicode to work, but your JVM must be able to convert
       between the character sets. This should also make reading
       data from the server be a bit quicker, because there is now
       no conversion from StringBuffer to String.

     - Changed PreparedStatement.streamToString() to be more
       efficient (code from Uwe Schaefer).

     - URL parsing is more robust (throws SQL exceptions on errors
       rather than NullPointerExceptions)

     - PreparedStatement now can convert Strings to Time/Date values
       via setObject() (code from Robert Currey).

     - IO no longer hangs in Buffer.readInt(), that bug was
       introduced in 1.1d when changing to all byte-arrays for
       result sets. (Pointed out by Samo Login)

11-03-98 - Version 1.1b

     - Fixes to DatabaseMetaData to allow both IBM VA and J-Builder
       to work. Let me know how it goes. (thanks to Jac Kersing)

     - Fix to ResultSet.getBoolean() for NULL strings
       (thanks to Barry Lagerweij)

     - Beginning of code cleanup, and formatting. Getting ready
       to branch this off to a parallel JDBC-2.0 source tree.

     - Added "final" modifier to critical sections in MysqlIO and
       Buffer to allow compiler to inline methods for speed.

9-29-98

     - If object references passed to setXXX() in PreparedStatement are
       null, setNull() is automatically called for you. (Thanks for the
       suggestion goes to Erik Ostrom)

     - setObject() in PreparedStatement will now attempt to write a
       serialized  representation of the object to the database for
       objects of Types.OTHER and objects of unknown type.

     - Util now has a static method readObject() which given a ResultSet
       and a column index will re-instantiate an object serialized in
       the above manner.

9-02-98 - Vesion 1.1

     - Got rid of "ugly hack" in MysqlIO.nextRow(). Rather than
       catch an exception, Buffer.isLastDataPacket() was fixed.

     - Connection.getCatalog() and Connection.setCatalog()
       should work now.

     - Statement.setMaxRows() works, as well as setting
       by property maxRows. Statement.setMaxRows() overrides
       maxRows set via properties or url parameters.

     - Automatic re-connection is available. Because it has
       to "ping" the database before each query, it is
       turned off by default. To use it, pass in "autoReconnect=true"
       in the connection URL. You may also change the number of
       reconnect tries, and the initial timeout value via
       "maxReconnects=n" (default 3) and "initialTimeout=n"
       (seconds, default 2) parameters. The timeout is an
       exponential backoff type of timeout, e.g. if you have initial
       timeout of 2 seconds, and maxReconnects of 3, then the driver
       will timeout 2 seconds, 4 seconds, then 16 seconds between each
       re-connection attempt.

8-24-98 - Version 1.0

     - Fixed handling of blob data in Buffer.java

     - Fixed bug with authentication packet being
       sized too small.

     - The JDBC Driver is now under the LPGL

8-14-98 -

     - Fixed Buffer.readLenString() to correctly
          read data for BLOBS.

     - Fixed PreparedStatement.stringToStream to
          correctly read data for BLOBS.

     - Fixed PreparedStatement.setDate() to not
       add a day.
       (above fixes thanks to Vincent Partington)

     - Added URL parameter parsing (?user=... etc).


8-04-98 - Version 0.9d

     - Big news! New package name. Tim Endres from ICE
       Engineering is starting a new source tree for
       GNU GPL'd Java software. He's graciously given
       me the org.gjt.mm package directory to use, so now
       the driver is in the org.gjt.mm.mysql package scheme.
       I'm "legal" now. Look for more information on Tim's
       project soon.

     - Now using dynamically sized packets to reduce
       memory usage when sending commands to the DB.

     - Small fixes to getTypeInfo() for parameters, etc.

     - DatabaseMetaData is now fully implemented. Let me
       know if these drivers work with the various IDEs
       out there. I've heard that they're working with
       JBuilder right now.

     - Added JavaDoc documentation to the package.

     - Package now available in .zip or .tar.gz.

7-28-98 - Version 0.9

     - Implemented getTypeInfo().
       Connection.rollback() now throws an SQLException
       per the JDBC spec.

     - Added PreparedStatement that supports all JDBC API
       methods for PreparedStatement including InputStreams.
       Please check this out and let me know if anything is
       broken.

     - Fixed a bug in ResultSet that would break some
       queries that only returned 1 row.

     - Fixed bugs in DatabaseMetaData.getTables(),
       DatabaseMetaData.getColumns() and
       DatabaseMetaData.getCatalogs().

     - Added functionality to Statement that allows
       executeUpdate() to store values for IDs that are
       automatically generated for AUTO_INCREMENT fields.
       Basically, after an executeUpdate(), look at the
       SQLWarnings for warnings like "LAST_INSERTED_ID =
       'some number', COMMAND = 'your SQL query'".

       If you are using AUTO_INCREMENT fields in your
       tables and are executing a lot of executeUpdate()s
       on one Statement, be sure to clearWarnings() every
       so often to save memory.

7-06-98 - Version 0.8

     - Split MysqlIO and Buffer to separate classes. Some
       ClassLoaders gave an IllegalAccess error for some
       fields in those two classes. Now mm.mysql works in
       applets and all classloaders.

       Thanks to Joe Ennis <[email protected]> for pointing
       out the problem and working on a fix with me.

7-01-98 - Version 0.7

     - Fixed DatabaseMetadata problems in getColumns() and
       bug in switch statement in the Field constructor.

       Thanks to Costin Manolache <[email protected]> for
       pointing these out.

5-21-98 - Version 0.6

     - Incorporated efficiency changes from
       Richard Swift <[email protected]> in
       MysqlIO.java and ResultSet.java

     - We're now 15% faster than gwe's driver.

     - Started working on DatabaseMetaData.

       The following methods are implemented:
        * getTables()
        * getTableTypes()
        * getColumns
        * getCatalogs()